./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix011_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix011_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix011_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix011_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:57:27,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:57:27,825 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:57:27,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:57:27,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:57:27,856 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:57:27,856 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:57:27,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:57:27,857 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:57:27,866 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:57:27,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:57:27,867 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:57:27,867 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:57:27,868 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:57:27,869 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:57:27,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:57:27,869 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:57:27,869 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:57:27,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:57:27,881 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:57:27,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:57:27,882 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:57:27,882 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:57:27,882 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:57:27,882 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:57:27,882 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:57:27,883 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:57:27,883 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:57:27,883 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:57:27,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:57:27,884 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:57:27,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:57:27,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:57:27,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:57:27,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:57:27,885 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:57:27,885 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:57:27,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:57:27,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:57:27,886 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:57:27,886 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:57:27,886 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:57:27,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:57:27,887 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:57:28,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:57:28,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:57:28,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:57:28,101 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:57:28,101 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:57:28,102 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix011_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 02:57:28,277 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:57:28,279 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:57:28,280 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix011_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 02:57:29,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:57:29,420 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:57:29,421 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix011_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 02:57:29,436 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69c28047/84571e26b799443391c5f24e8ea763a1/FLAG24c64fcfb [2024-06-28 02:57:29,445 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69c28047/84571e26b799443391c5f24e8ea763a1 [2024-06-28 02:57:29,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:57:29,452 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:57:29,453 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:57:29,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:57:29,456 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:57:29,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:57:28" (1/2) ... [2024-06-28 02:57:29,458 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee8c8a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:29, skipping insertion in model container [2024-06-28 02:57:29,458 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:57:28" (1/2) ... [2024-06-28 02:57:29,458 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@b7a619a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:29, skipping insertion in model container [2024-06-28 02:57:29,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:57:29" (2/2) ... [2024-06-28 02:57:29,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee8c8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:29, skipping insertion in model container [2024-06-28 02:57:29,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:57:29" (2/2) ... [2024-06-28 02:57:29,459 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:57:29,523 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:57:29,524 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ((((((((((((((((((((! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) [2024-06-28 02:57:29,525 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) [2024-06-28 02:57:29,525 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ((((((((((((((((((((! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) [2024-06-28 02:57:29,525 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:57:29,525 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-06-28 02:57:29,564 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:57:29,916 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:57:29,926 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:57:30,026 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:57:30,071 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:57:30,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:30 WrapperNode [2024-06-28 02:57:30,072 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:57:30,074 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:57:30,074 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:57:30,074 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:57:30,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:30" (1/1) ... [2024-06-28 02:57:30,108 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:30" (1/1) ... [2024-06-28 02:57:30,145 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 128 [2024-06-28 02:57:30,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:57:30,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:57:30,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:57:30,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:57:30,162 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:30" (1/1) ... [2024-06-28 02:57:30,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:30" (1/1) ... [2024-06-28 02:57:30,166 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:30" (1/1) ... [2024-06-28 02:57:30,186 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 02:57:30,192 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:30" (1/1) ... [2024-06-28 02:57:30,192 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:30" (1/1) ... [2024-06-28 02:57:30,205 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:30" (1/1) ... [2024-06-28 02:57:30,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:30" (1/1) ... [2024-06-28 02:57:30,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:30" (1/1) ... [2024-06-28 02:57:30,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:30" (1/1) ... [2024-06-28 02:57:30,212 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:57:30,213 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:57:30,213 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:57:30,213 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:57:30,214 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:30" (1/1) ... [2024-06-28 02:57:30,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:57:30,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:57:30,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:57:30,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:57:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:57:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:57:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:57:30,278 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:57:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:57:30,278 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:57:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:57:30,279 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:57:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:57:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:57:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:57:30,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:57:30,281 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:57:30,420 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:57:30,423 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:57:30,794 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:57:30,795 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:57:30,933 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:57:30,933 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:57:30,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:57:30 BoogieIcfgContainer [2024-06-28 02:57:30,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:57:30,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:57:30,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:57:30,940 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:57:30,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:57:28" (1/4) ... [2024-06-28 02:57:30,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d02175a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:57:30, skipping insertion in model container [2024-06-28 02:57:30,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:57:29" (2/4) ... [2024-06-28 02:57:30,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d02175a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:57:30, skipping insertion in model container [2024-06-28 02:57:30,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:30" (3/4) ... [2024-06-28 02:57:30,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d02175a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:57:30, skipping insertion in model container [2024-06-28 02:57:30,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:57:30" (4/4) ... [2024-06-28 02:57:30,943 INFO L112 eAbstractionObserver]: Analyzing ICFG mix011_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 02:57:30,956 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:57:30,957 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 02:57:30,957 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:57:31,016 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:57:31,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 43 transitions, 98 flow [2024-06-28 02:57:31,077 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2024-06-28 02:57:31,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:57:31,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:57:31,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 43 transitions, 98 flow [2024-06-28 02:57:31,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2024-06-28 02:57:31,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:57:31,100 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@18f7e17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:57:31,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 02:57:31,104 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:57:31,104 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:57:31,104 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:57:31,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:31,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:57:31,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:31,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:31,109 INFO L85 PathProgramCache]: Analyzing trace with hash 383652908, now seen corresponding path program 1 times [2024-06-28 02:57:31,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:31,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33172110] [2024-06-28 02:57:31,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:31,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:32,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:32,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33172110] [2024-06-28 02:57:32,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33172110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:32,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:32,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:57:32,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806722927] [2024-06-28 02:57:32,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:32,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:57:32,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:32,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:57:32,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:57:32,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-28 02:57:32,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:32,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:32,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-28 02:57:32,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:32,509 INFO L124 PetriNetUnfolderBase]: 1659/2585 cut-off events. [2024-06-28 02:57:32,510 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 02:57:32,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5149 conditions, 2585 events. 1659/2585 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12998 event pairs, 1184 based on Foata normal form. 1/2520 useless extension candidates. Maximal degree in co-relation 5137. Up to 2465 conditions per place. [2024-06-28 02:57:32,527 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 33 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 02:57:32,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 177 flow [2024-06-28 02:57:32,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:57:32,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:57:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-28 02:57:32,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6124031007751938 [2024-06-28 02:57:32,538 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 3 states and 79 transitions. [2024-06-28 02:57:32,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 177 flow [2024-06-28 02:57:32,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:32,543 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 104 flow [2024-06-28 02:57:32,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-28 02:57:32,546 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2024-06-28 02:57:32,547 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 104 flow [2024-06-28 02:57:32,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:32,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:32,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:32,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:57:32,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:32,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:32,548 INFO L85 PathProgramCache]: Analyzing trace with hash -675957289, now seen corresponding path program 1 times [2024-06-28 02:57:32,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:32,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025556764] [2024-06-28 02:57:32,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:32,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:33,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:33,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025556764] [2024-06-28 02:57:33,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025556764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:33,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:33,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:57:33,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357620298] [2024-06-28 02:57:33,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:33,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:57:33,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:33,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:57:33,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:57:33,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-28 02:57:33,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:33,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:33,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-28 02:57:33,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:33,689 INFO L124 PetriNetUnfolderBase]: 1653/2576 cut-off events. [2024-06-28 02:57:33,690 INFO L125 PetriNetUnfolderBase]: For 483/483 co-relation queries the response was YES. [2024-06-28 02:57:33,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5765 conditions, 2576 events. 1653/2576 cut-off events. For 483/483 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13013 event pairs, 1038 based on Foata normal form. 3/2553 useless extension candidates. Maximal degree in co-relation 5753. Up to 2441 conditions per place. [2024-06-28 02:57:33,702 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 40 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-28 02:57:33,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 244 flow [2024-06-28 02:57:33,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:57:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:57:33,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-06-28 02:57:33,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5930232558139535 [2024-06-28 02:57:33,705 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 104 flow. Second operand 4 states and 102 transitions. [2024-06-28 02:57:33,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 244 flow [2024-06-28 02:57:33,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:57:33,707 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 140 flow [2024-06-28 02:57:33,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-06-28 02:57:33,708 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2024-06-28 02:57:33,708 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 140 flow [2024-06-28 02:57:33,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:33,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:33,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:33,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:57:33,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:33,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:33,709 INFO L85 PathProgramCache]: Analyzing trace with hash 520161707, now seen corresponding path program 1 times [2024-06-28 02:57:33,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:33,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123311833] [2024-06-28 02:57:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:33,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:34,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:34,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123311833] [2024-06-28 02:57:34,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123311833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:34,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:34,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:57:34,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216005415] [2024-06-28 02:57:34,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:34,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:57:34,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:34,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:57:34,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:57:34,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-28 02:57:34,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:34,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:34,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-28 02:57:34,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:34,943 INFO L124 PetriNetUnfolderBase]: 1661/2602 cut-off events. [2024-06-28 02:57:34,944 INFO L125 PetriNetUnfolderBase]: For 1388/1388 co-relation queries the response was YES. [2024-06-28 02:57:34,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6428 conditions, 2602 events. 1661/2602 cut-off events. For 1388/1388 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 13228 event pairs, 812 based on Foata normal form. 5/2584 useless extension candidates. Maximal degree in co-relation 6414. Up to 2387 conditions per place. [2024-06-28 02:57:34,957 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 53 selfloop transitions, 16 changer transitions 0/76 dead transitions. [2024-06-28 02:57:34,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 76 transitions, 398 flow [2024-06-28 02:57:34,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:57:34,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:57:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-28 02:57:34,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6186046511627907 [2024-06-28 02:57:34,960 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 140 flow. Second operand 5 states and 133 transitions. [2024-06-28 02:57:34,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 76 transitions, 398 flow [2024-06-28 02:57:34,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 384 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 02:57:34,962 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 239 flow [2024-06-28 02:57:34,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2024-06-28 02:57:34,963 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2024-06-28 02:57:34,963 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 239 flow [2024-06-28 02:57:34,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:34,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:34,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:34,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:57:34,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:34,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:34,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1775201430, now seen corresponding path program 1 times [2024-06-28 02:57:34,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:34,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505405228] [2024-06-28 02:57:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:34,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:36,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:36,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505405228] [2024-06-28 02:57:36,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505405228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:36,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:36,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:57:36,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255469937] [2024-06-28 02:57:36,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:36,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:57:36,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:36,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:57:36,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:57:36,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-28 02:57:36,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:36,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:36,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-28 02:57:36,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:36,542 INFO L124 PetriNetUnfolderBase]: 1669/2614 cut-off events. [2024-06-28 02:57:36,542 INFO L125 PetriNetUnfolderBase]: For 3185/3188 co-relation queries the response was YES. [2024-06-28 02:57:36,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7547 conditions, 2614 events. 1669/2614 cut-off events. For 3185/3188 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 13261 event pairs, 666 based on Foata normal form. 7/2598 useless extension candidates. Maximal degree in co-relation 7530. Up to 2373 conditions per place. [2024-06-28 02:57:36,557 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 60 selfloop transitions, 20 changer transitions 0/87 dead transitions. [2024-06-28 02:57:36,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 525 flow [2024-06-28 02:57:36,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:57:36,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:57:36,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-28 02:57:36,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6085271317829457 [2024-06-28 02:57:36,560 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 239 flow. Second operand 6 states and 157 transitions. [2024-06-28 02:57:36,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 525 flow [2024-06-28 02:57:36,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 87 transitions, 517 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 02:57:36,563 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 312 flow [2024-06-28 02:57:36,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2024-06-28 02:57:36,564 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 14 predicate places. [2024-06-28 02:57:36,564 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 312 flow [2024-06-28 02:57:36,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:36,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:36,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:36,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:57:36,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:36,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:36,565 INFO L85 PathProgramCache]: Analyzing trace with hash 803331766, now seen corresponding path program 1 times [2024-06-28 02:57:36,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:36,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487514682] [2024-06-28 02:57:36,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:36,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:37,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:37,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487514682] [2024-06-28 02:57:37,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487514682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:37,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:37,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:57:37,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659413088] [2024-06-28 02:57:37,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:37,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:57:37,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:37,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:57:37,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:57:38,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-28 02:57:38,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 312 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:38,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:38,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-28 02:57:38,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:38,480 INFO L124 PetriNetUnfolderBase]: 1681/2634 cut-off events. [2024-06-28 02:57:38,481 INFO L125 PetriNetUnfolderBase]: For 5035/5038 co-relation queries the response was YES. [2024-06-28 02:57:38,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8418 conditions, 2634 events. 1681/2634 cut-off events. For 5035/5038 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 13365 event pairs, 502 based on Foata normal form. 12/2623 useless extension candidates. Maximal degree in co-relation 8398. Up to 2341 conditions per place. [2024-06-28 02:57:38,496 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 64 selfloop transitions, 23 changer transitions 0/94 dead transitions. [2024-06-28 02:57:38,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 94 transitions, 626 flow [2024-06-28 02:57:38,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:38,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 02:57:38,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5880398671096345 [2024-06-28 02:57:38,498 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 312 flow. Second operand 7 states and 177 transitions. [2024-06-28 02:57:38,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 94 transitions, 626 flow [2024-06-28 02:57:38,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 94 transitions, 577 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:38,502 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 339 flow [2024-06-28 02:57:38,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=339, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-06-28 02:57:38,503 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 16 predicate places. [2024-06-28 02:57:38,503 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 339 flow [2024-06-28 02:57:38,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:38,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:38,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:38,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:57:38,504 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:38,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:38,504 INFO L85 PathProgramCache]: Analyzing trace with hash 139442829, now seen corresponding path program 1 times [2024-06-28 02:57:38,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:38,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325325532] [2024-06-28 02:57:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:38,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:39,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:39,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325325532] [2024-06-28 02:57:39,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325325532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:39,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:39,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:57:39,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499716371] [2024-06-28 02:57:39,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:39,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:57:39,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:39,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:57:39,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:57:39,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:39,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 339 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:39,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:39,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:39,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:39,491 INFO L124 PetriNetUnfolderBase]: 1676/2622 cut-off events. [2024-06-28 02:57:39,492 INFO L125 PetriNetUnfolderBase]: For 7426/7426 co-relation queries the response was YES. [2024-06-28 02:57:39,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8940 conditions, 2622 events. 1676/2622 cut-off events. For 7426/7426 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13331 event pairs, 949 based on Foata normal form. 2/2591 useless extension candidates. Maximal degree in co-relation 8918. Up to 2484 conditions per place. [2024-06-28 02:57:39,506 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 53 selfloop transitions, 10 changer transitions 0/69 dead transitions. [2024-06-28 02:57:39,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 505 flow [2024-06-28 02:57:39,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:57:39,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:57:39,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-28 02:57:39,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.437984496124031 [2024-06-28 02:57:39,508 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 339 flow. Second operand 6 states and 113 transitions. [2024-06-28 02:57:39,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 505 flow [2024-06-28 02:57:39,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 69 transitions, 439 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:39,512 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 320 flow [2024-06-28 02:57:39,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-06-28 02:57:39,513 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 18 predicate places. [2024-06-28 02:57:39,513 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 320 flow [2024-06-28 02:57:39,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:39,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:39,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:39,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:57:39,514 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:39,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:39,514 INFO L85 PathProgramCache]: Analyzing trace with hash 27358305, now seen corresponding path program 1 times [2024-06-28 02:57:39,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:39,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525619604] [2024-06-28 02:57:39,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:39,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:40,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:40,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525619604] [2024-06-28 02:57:40,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525619604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:40,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:40,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:57:40,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206105336] [2024-06-28 02:57:40,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:40,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:57:40,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:40,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:57:40,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:57:40,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:40,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 320 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:40,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:40,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:40,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:40,758 INFO L124 PetriNetUnfolderBase]: 1967/3039 cut-off events. [2024-06-28 02:57:40,758 INFO L125 PetriNetUnfolderBase]: For 9360/9360 co-relation queries the response was YES. [2024-06-28 02:57:40,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10273 conditions, 3039 events. 1967/3039 cut-off events. For 9360/9360 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 15224 event pairs, 1130 based on Foata normal form. 2/3027 useless extension candidates. Maximal degree in co-relation 10248. Up to 2896 conditions per place. [2024-06-28 02:57:40,773 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 58 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2024-06-28 02:57:40,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 76 transitions, 518 flow [2024-06-28 02:57:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:40,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:40,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 02:57:40,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152823920265781 [2024-06-28 02:57:40,775 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 320 flow. Second operand 7 states and 125 transitions. [2024-06-28 02:57:40,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 76 transitions, 518 flow [2024-06-28 02:57:40,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 76 transitions, 493 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:40,781 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 355 flow [2024-06-28 02:57:40,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=355, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-06-28 02:57:40,781 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 21 predicate places. [2024-06-28 02:57:40,781 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 355 flow [2024-06-28 02:57:40,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:40,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:40,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:40,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:57:40,782 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:40,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:40,783 INFO L85 PathProgramCache]: Analyzing trace with hash 367094722, now seen corresponding path program 1 times [2024-06-28 02:57:40,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:40,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36835923] [2024-06-28 02:57:40,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:40,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:41,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:41,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36835923] [2024-06-28 02:57:41,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36835923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:41,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:41,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:57:41,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158404523] [2024-06-28 02:57:41,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:41,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:57:41,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:41,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:57:41,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:57:41,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:41,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 355 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:41,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:41,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:41,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:41,916 INFO L124 PetriNetUnfolderBase]: 1929/3063 cut-off events. [2024-06-28 02:57:41,916 INFO L125 PetriNetUnfolderBase]: For 11806/11820 co-relation queries the response was YES. [2024-06-28 02:57:41,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11037 conditions, 3063 events. 1929/3063 cut-off events. For 11806/11820 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15856 event pairs, 731 based on Foata normal form. 16/3076 useless extension candidates. Maximal degree in co-relation 11012. Up to 2723 conditions per place. [2024-06-28 02:57:41,936 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 65 selfloop transitions, 30 changer transitions 0/102 dead transitions. [2024-06-28 02:57:41,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 102 transitions, 749 flow [2024-06-28 02:57:41,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:41,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:41,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-28 02:57:41,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4983388704318937 [2024-06-28 02:57:41,937 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 355 flow. Second operand 7 states and 150 transitions. [2024-06-28 02:57:41,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 102 transitions, 749 flow [2024-06-28 02:57:41,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 102 transitions, 713 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:41,946 INFO L231 Difference]: Finished difference. Result has 69 places, 77 transitions, 509 flow [2024-06-28 02:57:41,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=509, PETRI_PLACES=69, PETRI_TRANSITIONS=77} [2024-06-28 02:57:41,949 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 25 predicate places. [2024-06-28 02:57:41,949 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 77 transitions, 509 flow [2024-06-28 02:57:41,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:41,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:41,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:41,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:57:41,950 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:41,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash 482213962, now seen corresponding path program 2 times [2024-06-28 02:57:41,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:41,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022322741] [2024-06-28 02:57:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:41,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:42,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:42,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022322741] [2024-06-28 02:57:42,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022322741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:42,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:42,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:57:42,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61603342] [2024-06-28 02:57:42,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:42,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:57:42,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:42,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:57:42,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:57:42,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:42,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 77 transitions, 509 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:42,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:42,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:42,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:43,149 INFO L124 PetriNetUnfolderBase]: 1939/3079 cut-off events. [2024-06-28 02:57:43,149 INFO L125 PetriNetUnfolderBase]: For 14211/14225 co-relation queries the response was YES. [2024-06-28 02:57:43,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11696 conditions, 3079 events. 1939/3079 cut-off events. For 14211/14225 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15955 event pairs, 737 based on Foata normal form. 18/3094 useless extension candidates. Maximal degree in co-relation 11668. Up to 2727 conditions per place. [2024-06-28 02:57:43,165 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 59 selfloop transitions, 35 changer transitions 0/101 dead transitions. [2024-06-28 02:57:43,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 101 transitions, 837 flow [2024-06-28 02:57:43,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:57:43,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:57:43,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-28 02:57:43,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49612403100775193 [2024-06-28 02:57:43,167 INFO L175 Difference]: Start difference. First operand has 69 places, 77 transitions, 509 flow. Second operand 6 states and 128 transitions. [2024-06-28 02:57:43,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 101 transitions, 837 flow [2024-06-28 02:57:43,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 101 transitions, 795 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:43,176 INFO L231 Difference]: Finished difference. Result has 72 places, 82 transitions, 608 flow [2024-06-28 02:57:43,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=608, PETRI_PLACES=72, PETRI_TRANSITIONS=82} [2024-06-28 02:57:43,177 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2024-06-28 02:57:43,177 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 82 transitions, 608 flow [2024-06-28 02:57:43,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:43,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:43,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:43,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:57:43,178 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:43,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:43,178 INFO L85 PathProgramCache]: Analyzing trace with hash 860815102, now seen corresponding path program 3 times [2024-06-28 02:57:43,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:43,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209428472] [2024-06-28 02:57:43,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:43,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:43,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:43,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209428472] [2024-06-28 02:57:43,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209428472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:43,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:43,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:57:43,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031338045] [2024-06-28 02:57:43,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:43,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:57:43,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:43,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:57:43,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:57:43,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:43,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 82 transitions, 608 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:43,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:43,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:43,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:44,399 INFO L124 PetriNetUnfolderBase]: 1951/3058 cut-off events. [2024-06-28 02:57:44,399 INFO L125 PetriNetUnfolderBase]: For 17358/17358 co-relation queries the response was YES. [2024-06-28 02:57:44,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12094 conditions, 3058 events. 1951/3058 cut-off events. For 17358/17358 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 15672 event pairs, 1053 based on Foata normal form. 3/3020 useless extension candidates. Maximal degree in co-relation 12065. Up to 2849 conditions per place. [2024-06-28 02:57:44,417 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 75 selfloop transitions, 14 changer transitions 0/96 dead transitions. [2024-06-28 02:57:44,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 830 flow [2024-06-28 02:57:44,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:57:44,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:57:44,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-28 02:57:44,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2024-06-28 02:57:44,418 INFO L175 Difference]: Start difference. First operand has 72 places, 82 transitions, 608 flow. Second operand 6 states and 119 transitions. [2024-06-28 02:57:44,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 830 flow [2024-06-28 02:57:44,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 776 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:44,429 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 592 flow [2024-06-28 02:57:44,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=592, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2024-06-28 02:57:44,430 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2024-06-28 02:57:44,430 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 592 flow [2024-06-28 02:57:44,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:44,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:44,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:44,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:57:44,431 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:44,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:44,431 INFO L85 PathProgramCache]: Analyzing trace with hash 848109008, now seen corresponding path program 1 times [2024-06-28 02:57:44,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:44,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185828615] [2024-06-28 02:57:44,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:44,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:45,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:45,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185828615] [2024-06-28 02:57:45,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185828615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:45,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:45,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:45,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20562491] [2024-06-28 02:57:45,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:45,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:45,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:45,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:45,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:45,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:45,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 592 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:45,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:45,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:45,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:45,844 INFO L124 PetriNetUnfolderBase]: 2026/3127 cut-off events. [2024-06-28 02:57:45,844 INFO L125 PetriNetUnfolderBase]: For 16645/16645 co-relation queries the response was YES. [2024-06-28 02:57:45,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12108 conditions, 3127 events. 2026/3127 cut-off events. For 16645/16645 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15619 event pairs, 1085 based on Foata normal form. 4/3117 useless extension candidates. Maximal degree in co-relation 12078. Up to 2962 conditions per place. [2024-06-28 02:57:45,859 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 84 selfloop transitions, 15 changer transitions 0/104 dead transitions. [2024-06-28 02:57:45,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 104 transitions, 870 flow [2024-06-28 02:57:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:45,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:45,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 02:57:45,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43853820598006643 [2024-06-28 02:57:45,861 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 592 flow. Second operand 7 states and 132 transitions. [2024-06-28 02:57:45,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 104 transitions, 870 flow [2024-06-28 02:57:45,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 104 transitions, 795 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:45,870 INFO L231 Difference]: Finished difference. Result has 76 places, 85 transitions, 585 flow [2024-06-28 02:57:45,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=585, PETRI_PLACES=76, PETRI_TRANSITIONS=85} [2024-06-28 02:57:45,871 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 32 predicate places. [2024-06-28 02:57:45,871 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 85 transitions, 585 flow [2024-06-28 02:57:45,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:45,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:45,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:45,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:57:45,872 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:45,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:45,872 INFO L85 PathProgramCache]: Analyzing trace with hash -439755932, now seen corresponding path program 1 times [2024-06-28 02:57:45,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:45,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380587428] [2024-06-28 02:57:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:45,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:46,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:46,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:46,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380587428] [2024-06-28 02:57:46,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380587428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:46,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:46,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:46,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157309507] [2024-06-28 02:57:46,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:46,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:46,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:46,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:46,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:46,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:46,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 85 transitions, 585 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:46,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:46,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:46,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:47,231 INFO L124 PetriNetUnfolderBase]: 2074/3237 cut-off events. [2024-06-28 02:57:47,231 INFO L125 PetriNetUnfolderBase]: For 19362/19376 co-relation queries the response was YES. [2024-06-28 02:57:47,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13020 conditions, 3237 events. 2074/3237 cut-off events. For 19362/19376 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 16392 event pairs, 750 based on Foata normal form. 13/3247 useless extension candidates. Maximal degree in co-relation 12989. Up to 2829 conditions per place. [2024-06-28 02:57:47,251 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 83 selfloop transitions, 41 changer transitions 0/129 dead transitions. [2024-06-28 02:57:47,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 129 transitions, 1110 flow [2024-06-28 02:57:47,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:47,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:47,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 02:57:47,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48255813953488375 [2024-06-28 02:57:47,253 INFO L175 Difference]: Start difference. First operand has 76 places, 85 transitions, 585 flow. Second operand 8 states and 166 transitions. [2024-06-28 02:57:47,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 129 transitions, 1110 flow [2024-06-28 02:57:47,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 129 transitions, 1066 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:47,264 INFO L231 Difference]: Finished difference. Result has 80 places, 96 transitions, 740 flow [2024-06-28 02:57:47,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=740, PETRI_PLACES=80, PETRI_TRANSITIONS=96} [2024-06-28 02:57:47,264 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 36 predicate places. [2024-06-28 02:57:47,265 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 96 transitions, 740 flow [2024-06-28 02:57:47,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:47,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:47,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:47,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:57:47,265 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:47,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:47,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2063732456, now seen corresponding path program 2 times [2024-06-28 02:57:47,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:47,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359462346] [2024-06-28 02:57:47,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:47,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:48,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:48,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359462346] [2024-06-28 02:57:48,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359462346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:48,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:48,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:48,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856863617] [2024-06-28 02:57:48,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:48,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:48,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:48,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:48,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:48,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:48,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 96 transitions, 740 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:48,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:48,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:48,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:48,686 INFO L124 PetriNetUnfolderBase]: 2110/3292 cut-off events. [2024-06-28 02:57:48,686 INFO L125 PetriNetUnfolderBase]: For 24128/24143 co-relation queries the response was YES. [2024-06-28 02:57:48,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14278 conditions, 3292 events. 2110/3292 cut-off events. For 24128/24143 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 16637 event pairs, 754 based on Foata normal form. 18/3307 useless extension candidates. Maximal degree in co-relation 14245. Up to 2861 conditions per place. [2024-06-28 02:57:48,703 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 73 selfloop transitions, 50 changer transitions 0/128 dead transitions. [2024-06-28 02:57:48,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 128 transitions, 1197 flow [2024-06-28 02:57:48,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:48,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 02:57:48,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750830564784053 [2024-06-28 02:57:48,705 INFO L175 Difference]: Start difference. First operand has 80 places, 96 transitions, 740 flow. Second operand 7 states and 143 transitions. [2024-06-28 02:57:48,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 128 transitions, 1197 flow [2024-06-28 02:57:48,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 128 transitions, 1158 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:48,718 INFO L231 Difference]: Finished difference. Result has 84 places, 103 transitions, 892 flow [2024-06-28 02:57:48,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=892, PETRI_PLACES=84, PETRI_TRANSITIONS=103} [2024-06-28 02:57:48,719 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 40 predicate places. [2024-06-28 02:57:48,719 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 103 transitions, 892 flow [2024-06-28 02:57:48,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:48,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:48,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:48,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:57:48,719 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:48,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:48,720 INFO L85 PathProgramCache]: Analyzing trace with hash 909446948, now seen corresponding path program 3 times [2024-06-28 02:57:48,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:48,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721232206] [2024-06-28 02:57:48,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:48,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:49,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:49,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721232206] [2024-06-28 02:57:49,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721232206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:49,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:49,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:49,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849635865] [2024-06-28 02:57:49,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:49,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:49,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:49,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:49,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:49,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:49,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 103 transitions, 892 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:49,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:49,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:49,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:50,039 INFO L124 PetriNetUnfolderBase]: 2128/3303 cut-off events. [2024-06-28 02:57:50,040 INFO L125 PetriNetUnfolderBase]: For 28522/28522 co-relation queries the response was YES. [2024-06-28 02:57:50,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15109 conditions, 3303 events. 2128/3303 cut-off events. For 28522/28522 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16657 event pairs, 1074 based on Foata normal form. 3/3294 useless extension candidates. Maximal degree in co-relation 15074. Up to 3116 conditions per place. [2024-06-28 02:57:50,058 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 104 selfloop transitions, 17 changer transitions 0/126 dead transitions. [2024-06-28 02:57:50,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 126 transitions, 1265 flow [2024-06-28 02:57:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:50,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:50,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-28 02:57:50,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43521594684385384 [2024-06-28 02:57:50,060 INFO L175 Difference]: Start difference. First operand has 84 places, 103 transitions, 892 flow. Second operand 7 states and 131 transitions. [2024-06-28 02:57:50,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 126 transitions, 1265 flow [2024-06-28 02:57:50,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 126 transitions, 1153 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:50,083 INFO L231 Difference]: Finished difference. Result has 87 places, 108 transitions, 902 flow [2024-06-28 02:57:50,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=902, PETRI_PLACES=87, PETRI_TRANSITIONS=108} [2024-06-28 02:57:50,084 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 43 predicate places. [2024-06-28 02:57:50,084 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 108 transitions, 902 flow [2024-06-28 02:57:50,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:50,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:50,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:50,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:57:50,084 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:50,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:50,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2054103320, now seen corresponding path program 4 times [2024-06-28 02:57:50,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:50,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721910383] [2024-06-28 02:57:50,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:50,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:50,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:50,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721910383] [2024-06-28 02:57:50,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721910383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:50,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:50,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:50,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647234655] [2024-06-28 02:57:50,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:50,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:50,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:50,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:50,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:50,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:50,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 108 transitions, 902 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:50,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:50,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:50,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:51,349 INFO L124 PetriNetUnfolderBase]: 2120/3293 cut-off events. [2024-06-28 02:57:51,349 INFO L125 PetriNetUnfolderBase]: For 28077/28077 co-relation queries the response was YES. [2024-06-28 02:57:51,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14813 conditions, 3293 events. 2120/3293 cut-off events. For 28077/28077 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16606 event pairs, 1072 based on Foata normal form. 3/3284 useless extension candidates. Maximal degree in co-relation 14777. Up to 3080 conditions per place. [2024-06-28 02:57:51,368 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 101 selfloop transitions, 26 changer transitions 0/132 dead transitions. [2024-06-28 02:57:51,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 132 transitions, 1301 flow [2024-06-28 02:57:51,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:51,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:51,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 02:57:51,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 02:57:51,370 INFO L175 Difference]: Start difference. First operand has 87 places, 108 transitions, 902 flow. Second operand 7 states and 133 transitions. [2024-06-28 02:57:51,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 132 transitions, 1301 flow [2024-06-28 02:57:51,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 132 transitions, 1235 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:51,394 INFO L231 Difference]: Finished difference. Result has 89 places, 113 transitions, 981 flow [2024-06-28 02:57:51,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=981, PETRI_PLACES=89, PETRI_TRANSITIONS=113} [2024-06-28 02:57:51,394 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 45 predicate places. [2024-06-28 02:57:51,394 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 113 transitions, 981 flow [2024-06-28 02:57:51,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:51,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:51,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:51,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:57:51,395 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:51,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:51,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1253364638, now seen corresponding path program 1 times [2024-06-28 02:57:51,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:51,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743794544] [2024-06-28 02:57:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:51,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:52,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:52,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743794544] [2024-06-28 02:57:52,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743794544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:52,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:52,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:57:52,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812255409] [2024-06-28 02:57:52,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:52,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:57:52,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:52,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:57:52,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:57:52,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:57:52,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 113 transitions, 981 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:52,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:52,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:57:52,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:52,632 INFO L124 PetriNetUnfolderBase]: 2648/3969 cut-off events. [2024-06-28 02:57:52,633 INFO L125 PetriNetUnfolderBase]: For 42315/42316 co-relation queries the response was YES. [2024-06-28 02:57:52,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18525 conditions, 3969 events. 2648/3969 cut-off events. For 42315/42316 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 19239 event pairs, 1407 based on Foata normal form. 2/3960 useless extension candidates. Maximal degree in co-relation 18488. Up to 3833 conditions per place. [2024-06-28 02:57:52,652 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 100 selfloop transitions, 9 changer transitions 0/123 dead transitions. [2024-06-28 02:57:52,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 123 transitions, 1245 flow [2024-06-28 02:57:52,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:57:52,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:57:52,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-28 02:57:52,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.413953488372093 [2024-06-28 02:57:52,653 INFO L175 Difference]: Start difference. First operand has 89 places, 113 transitions, 981 flow. Second operand 5 states and 89 transitions. [2024-06-28 02:57:52,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 123 transitions, 1245 flow [2024-06-28 02:57:52,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 123 transitions, 1152 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:52,684 INFO L231 Difference]: Finished difference. Result has 89 places, 116 transitions, 942 flow [2024-06-28 02:57:52,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=942, PETRI_PLACES=89, PETRI_TRANSITIONS=116} [2024-06-28 02:57:52,684 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 45 predicate places. [2024-06-28 02:57:52,684 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 116 transitions, 942 flow [2024-06-28 02:57:52,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:52,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:52,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:52,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:57:52,685 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:52,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:52,685 INFO L85 PathProgramCache]: Analyzing trace with hash 759241161, now seen corresponding path program 1 times [2024-06-28 02:57:52,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:52,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881679546] [2024-06-28 02:57:52,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:52,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:53,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:53,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:53,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881679546] [2024-06-28 02:57:53,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881679546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:53,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:53,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:53,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094545008] [2024-06-28 02:57:53,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:53,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:53,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:53,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:53,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:53,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:53,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 116 transitions, 942 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:53,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:53,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:53,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:54,118 INFO L124 PetriNetUnfolderBase]: 2161/3380 cut-off events. [2024-06-28 02:57:54,119 INFO L125 PetriNetUnfolderBase]: For 40426/40441 co-relation queries the response was YES. [2024-06-28 02:57:54,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16530 conditions, 3380 events. 2161/3380 cut-off events. For 40426/40441 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17406 event pairs, 736 based on Foata normal form. 16/3393 useless extension candidates. Maximal degree in co-relation 16492. Up to 2916 conditions per place. [2024-06-28 02:57:54,138 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 98 selfloop transitions, 41 changer transitions 0/156 dead transitions. [2024-06-28 02:57:54,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 156 transitions, 1464 flow [2024-06-28 02:57:54,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:54,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:54,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-28 02:57:54,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 02:57:54,142 INFO L175 Difference]: Start difference. First operand has 89 places, 116 transitions, 942 flow. Second operand 8 states and 168 transitions. [2024-06-28 02:57:54,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 156 transitions, 1464 flow [2024-06-28 02:57:54,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 156 transitions, 1432 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:54,171 INFO L231 Difference]: Finished difference. Result has 95 places, 126 transitions, 1102 flow [2024-06-28 02:57:54,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1102, PETRI_PLACES=95, PETRI_TRANSITIONS=126} [2024-06-28 02:57:54,171 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 51 predicate places. [2024-06-28 02:57:54,172 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 126 transitions, 1102 flow [2024-06-28 02:57:54,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:54,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:54,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:54,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:57:54,172 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:54,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:54,173 INFO L85 PathProgramCache]: Analyzing trace with hash 762416181, now seen corresponding path program 2 times [2024-06-28 02:57:54,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:54,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831924797] [2024-06-28 02:57:54,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:54,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:54,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:54,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831924797] [2024-06-28 02:57:54,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831924797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:54,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:54,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:54,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487977225] [2024-06-28 02:57:54,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:54,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:54,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:54,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:54,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:55,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:55,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 126 transitions, 1102 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:55,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:55,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:55,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:55,784 INFO L124 PetriNetUnfolderBase]: 2166/3385 cut-off events. [2024-06-28 02:57:55,785 INFO L125 PetriNetUnfolderBase]: For 46353/46372 co-relation queries the response was YES. [2024-06-28 02:57:55,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17461 conditions, 3385 events. 2166/3385 cut-off events. For 46353/46372 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17414 event pairs, 728 based on Foata normal form. 20/3402 useless extension candidates. Maximal degree in co-relation 17421. Up to 2957 conditions per place. [2024-06-28 02:57:55,802 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 102 selfloop transitions, 37 changer transitions 0/156 dead transitions. [2024-06-28 02:57:55,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 156 transitions, 1523 flow [2024-06-28 02:57:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:55,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:55,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-28 02:57:55,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796511627906977 [2024-06-28 02:57:55,803 INFO L175 Difference]: Start difference. First operand has 95 places, 126 transitions, 1102 flow. Second operand 8 states and 165 transitions. [2024-06-28 02:57:55,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 156 transitions, 1523 flow [2024-06-28 02:57:55,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 156 transitions, 1450 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:55,828 INFO L231 Difference]: Finished difference. Result has 99 places, 129 transitions, 1156 flow [2024-06-28 02:57:55,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1156, PETRI_PLACES=99, PETRI_TRANSITIONS=129} [2024-06-28 02:57:55,828 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 55 predicate places. [2024-06-28 02:57:55,828 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 129 transitions, 1156 flow [2024-06-28 02:57:55,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:55,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:55,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:55,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:57:55,829 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:55,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:55,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1119503229, now seen corresponding path program 3 times [2024-06-28 02:57:55,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:55,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881548685] [2024-06-28 02:57:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:55,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:56,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:56,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881548685] [2024-06-28 02:57:56,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881548685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:56,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:56,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:57:56,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214383886] [2024-06-28 02:57:56,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:56,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:57:56,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:56,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:57:56,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:57:56,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:56,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 129 transitions, 1156 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:56,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:56,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:56,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:57,077 INFO L124 PetriNetUnfolderBase]: 2206/3446 cut-off events. [2024-06-28 02:57:57,077 INFO L125 PetriNetUnfolderBase]: For 51711/51730 co-relation queries the response was YES. [2024-06-28 02:57:57,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18187 conditions, 3446 events. 2206/3446 cut-off events. For 51711/51730 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17693 event pairs, 735 based on Foata normal form. 20/3463 useless extension candidates. Maximal degree in co-relation 18145. Up to 2921 conditions per place. [2024-06-28 02:57:57,101 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 93 selfloop transitions, 60 changer transitions 0/170 dead transitions. [2024-06-28 02:57:57,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 170 transitions, 1798 flow [2024-06-28 02:57:57,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:57,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 02:57:57,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083056478405316 [2024-06-28 02:57:57,110 INFO L175 Difference]: Start difference. First operand has 99 places, 129 transitions, 1156 flow. Second operand 7 states and 153 transitions. [2024-06-28 02:57:57,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 170 transitions, 1798 flow [2024-06-28 02:57:57,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 170 transitions, 1710 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:57,152 INFO L231 Difference]: Finished difference. Result has 102 places, 144 transitions, 1414 flow [2024-06-28 02:57:57,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1414, PETRI_PLACES=102, PETRI_TRANSITIONS=144} [2024-06-28 02:57:57,153 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 58 predicate places. [2024-06-28 02:57:57,153 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 144 transitions, 1414 flow [2024-06-28 02:57:57,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:57,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:57,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:57,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:57:57,154 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:57,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:57,155 INFO L85 PathProgramCache]: Analyzing trace with hash 218072895, now seen corresponding path program 1 times [2024-06-28 02:57:57,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:57,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302874229] [2024-06-28 02:57:57,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:57,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:57,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:57,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:57,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302874229] [2024-06-28 02:57:57,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302874229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:57,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:57,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:57,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450582390] [2024-06-28 02:57:57,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:57,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:57,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:57,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:57,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:58,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:58,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 144 transitions, 1414 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:58,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:58,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:58,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:58,850 INFO L124 PetriNetUnfolderBase]: 2415/3712 cut-off events. [2024-06-28 02:57:58,850 INFO L125 PetriNetUnfolderBase]: For 61400/61419 co-relation queries the response was YES. [2024-06-28 02:57:58,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20515 conditions, 3712 events. 2415/3712 cut-off events. For 61400/61419 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18862 event pairs, 712 based on Foata normal form. 24/3733 useless extension candidates. Maximal degree in co-relation 20470. Up to 3086 conditions per place. [2024-06-28 02:57:58,875 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 134 selfloop transitions, 60 changer transitions 0/200 dead transitions. [2024-06-28 02:57:58,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 200 transitions, 2237 flow [2024-06-28 02:57:58,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:58,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-28 02:57:58,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 02:57:58,876 INFO L175 Difference]: Start difference. First operand has 102 places, 144 transitions, 1414 flow. Second operand 9 states and 189 transitions. [2024-06-28 02:57:58,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 200 transitions, 2237 flow [2024-06-28 02:57:58,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 200 transitions, 2180 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:58,923 INFO L231 Difference]: Finished difference. Result has 110 places, 158 transitions, 1671 flow [2024-06-28 02:57:58,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1671, PETRI_PLACES=110, PETRI_TRANSITIONS=158} [2024-06-28 02:57:58,923 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 66 predicate places. [2024-06-28 02:57:58,923 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 158 transitions, 1671 flow [2024-06-28 02:57:58,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:58,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:58,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:58,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:57:58,924 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:58,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:58,925 INFO L85 PathProgramCache]: Analyzing trace with hash 591198908, now seen corresponding path program 1 times [2024-06-28 02:57:58,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:58,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379891632] [2024-06-28 02:57:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:58,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:59,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:59,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379891632] [2024-06-28 02:57:59,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379891632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:59,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:59,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:59,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987276008] [2024-06-28 02:57:59,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:59,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:59,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:59,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:59,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:59,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:59,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 158 transitions, 1671 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:59,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:59,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:59,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:00,396 INFO L124 PetriNetUnfolderBase]: 2457/3781 cut-off events. [2024-06-28 02:58:00,397 INFO L125 PetriNetUnfolderBase]: For 62752/62771 co-relation queries the response was YES. [2024-06-28 02:58:00,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21753 conditions, 3781 events. 2457/3781 cut-off events. For 62752/62771 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 19277 event pairs, 731 based on Foata normal form. 18/3796 useless extension candidates. Maximal degree in co-relation 21705. Up to 3289 conditions per place. [2024-06-28 02:58:00,417 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 132 selfloop transitions, 68 changer transitions 0/206 dead transitions. [2024-06-28 02:58:00,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 206 transitions, 2521 flow [2024-06-28 02:58:00,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:00,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:00,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 02:58:00,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48255813953488375 [2024-06-28 02:58:00,418 INFO L175 Difference]: Start difference. First operand has 110 places, 158 transitions, 1671 flow. Second operand 8 states and 166 transitions. [2024-06-28 02:58:00,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 206 transitions, 2521 flow [2024-06-28 02:58:00,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 206 transitions, 2474 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 02:58:00,461 INFO L231 Difference]: Finished difference. Result has 116 places, 171 transitions, 1931 flow [2024-06-28 02:58:00,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1931, PETRI_PLACES=116, PETRI_TRANSITIONS=171} [2024-06-28 02:58:00,462 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 72 predicate places. [2024-06-28 02:58:00,462 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 171 transitions, 1931 flow [2024-06-28 02:58:00,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:00,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:00,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:00,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:58:00,462 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:00,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:00,463 INFO L85 PathProgramCache]: Analyzing trace with hash 590752508, now seen corresponding path program 2 times [2024-06-28 02:58:00,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:00,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101715464] [2024-06-28 02:58:00,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:00,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:01,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:01,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:01,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101715464] [2024-06-28 02:58:01,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101715464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:01,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:01,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:01,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135115774] [2024-06-28 02:58:01,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:01,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:01,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:01,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:01,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:01,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:01,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 171 transitions, 1931 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:01,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:01,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:01,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:01,918 INFO L124 PetriNetUnfolderBase]: 2491/3831 cut-off events. [2024-06-28 02:58:01,918 INFO L125 PetriNetUnfolderBase]: For 70053/70066 co-relation queries the response was YES. [2024-06-28 02:58:01,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22683 conditions, 3831 events. 2491/3831 cut-off events. For 70053/70066 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 19523 event pairs, 744 based on Foata normal form. 12/3840 useless extension candidates. Maximal degree in co-relation 22631. Up to 3319 conditions per place. [2024-06-28 02:58:01,946 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 129 selfloop transitions, 81 changer transitions 0/216 dead transitions. [2024-06-28 02:58:01,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 216 transitions, 2817 flow [2024-06-28 02:58:01,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:01,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:01,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-28 02:58:01,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48546511627906974 [2024-06-28 02:58:01,948 INFO L175 Difference]: Start difference. First operand has 116 places, 171 transitions, 1931 flow. Second operand 8 states and 167 transitions. [2024-06-28 02:58:01,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 216 transitions, 2817 flow [2024-06-28 02:58:02,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 216 transitions, 2684 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:02,005 INFO L231 Difference]: Finished difference. Result has 122 places, 187 transitions, 2263 flow [2024-06-28 02:58:02,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1812, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2263, PETRI_PLACES=122, PETRI_TRANSITIONS=187} [2024-06-28 02:58:02,006 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 78 predicate places. [2024-06-28 02:58:02,006 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 187 transitions, 2263 flow [2024-06-28 02:58:02,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:02,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:02,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:02,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:58:02,006 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:02,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:02,007 INFO L85 PathProgramCache]: Analyzing trace with hash -942833465, now seen corresponding path program 4 times [2024-06-28 02:58:02,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:02,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635245199] [2024-06-28 02:58:02,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:02,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:03,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:03,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:03,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635245199] [2024-06-28 02:58:03,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635245199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:03,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:03,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:03,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806276885] [2024-06-28 02:58:03,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:03,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:03,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:03,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:03,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:03,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:58:03,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 187 transitions, 2263 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:03,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:03,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:58:03,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:03,798 INFO L124 PetriNetUnfolderBase]: 2353/3686 cut-off events. [2024-06-28 02:58:03,798 INFO L125 PetriNetUnfolderBase]: For 76536/76555 co-relation queries the response was YES. [2024-06-28 02:58:03,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22447 conditions, 3686 events. 2353/3686 cut-off events. For 76536/76555 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 19244 event pairs, 684 based on Foata normal form. 22/3705 useless extension candidates. Maximal degree in co-relation 22392. Up to 3110 conditions per place. [2024-06-28 02:58:03,826 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 122 selfloop transitions, 70 changer transitions 0/215 dead transitions. [2024-06-28 02:58:03,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 215 transitions, 2785 flow [2024-06-28 02:58:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:03,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 02:58:03,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48255813953488375 [2024-06-28 02:58:03,828 INFO L175 Difference]: Start difference. First operand has 122 places, 187 transitions, 2263 flow. Second operand 8 states and 166 transitions. [2024-06-28 02:58:03,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 215 transitions, 2785 flow [2024-06-28 02:58:03,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 215 transitions, 2627 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:03,950 INFO L231 Difference]: Finished difference. Result has 126 places, 187 transitions, 2274 flow [2024-06-28 02:58:03,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2274, PETRI_PLACES=126, PETRI_TRANSITIONS=187} [2024-06-28 02:58:03,950 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 82 predicate places. [2024-06-28 02:58:03,950 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 187 transitions, 2274 flow [2024-06-28 02:58:03,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:03,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:03,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:03,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:58:03,951 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:03,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:03,951 INFO L85 PathProgramCache]: Analyzing trace with hash -448801968, now seen corresponding path program 3 times [2024-06-28 02:58:03,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:03,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374953531] [2024-06-28 02:58:03,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:03,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:04,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:04,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:04,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374953531] [2024-06-28 02:58:04,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374953531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:04,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:04,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:04,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501864082] [2024-06-28 02:58:04,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:04,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:04,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:04,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:04,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:04,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:04,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 187 transitions, 2274 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:04,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:04,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:04,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:05,382 INFO L124 PetriNetUnfolderBase]: 2531/3891 cut-off events. [2024-06-28 02:58:05,382 INFO L125 PetriNetUnfolderBase]: For 85285/85300 co-relation queries the response was YES. [2024-06-28 02:58:05,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24016 conditions, 3891 events. 2531/3891 cut-off events. For 85285/85300 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 19876 event pairs, 739 based on Foata normal form. 16/3904 useless extension candidates. Maximal degree in co-relation 23960. Up to 3360 conditions per place. [2024-06-28 02:58:05,409 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 126 selfloop transitions, 96 changer transitions 0/228 dead transitions. [2024-06-28 02:58:05,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 228 transitions, 3254 flow [2024-06-28 02:58:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:58:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:58:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-28 02:58:05,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47840531561461797 [2024-06-28 02:58:05,411 INFO L175 Difference]: Start difference. First operand has 126 places, 187 transitions, 2274 flow. Second operand 7 states and 144 transitions. [2024-06-28 02:58:05,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 228 transitions, 3254 flow [2024-06-28 02:58:05,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 228 transitions, 3082 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:05,485 INFO L231 Difference]: Finished difference. Result has 126 places, 202 transitions, 2587 flow [2024-06-28 02:58:05,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2110, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2587, PETRI_PLACES=126, PETRI_TRANSITIONS=202} [2024-06-28 02:58:05,485 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 82 predicate places. [2024-06-28 02:58:05,486 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 202 transitions, 2587 flow [2024-06-28 02:58:05,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:05,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:05,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:05,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:58:05,486 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:05,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:05,486 INFO L85 PathProgramCache]: Analyzing trace with hash -448801751, now seen corresponding path program 2 times [2024-06-28 02:58:05,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:05,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477899556] [2024-06-28 02:58:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:05,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:05,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:06,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:06,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:06,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477899556] [2024-06-28 02:58:06,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477899556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:06,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:06,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:06,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689893552] [2024-06-28 02:58:06,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:06,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:06,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:06,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:06,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:06,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:06,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 202 transitions, 2587 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:06,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:06,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:06,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:07,067 INFO L124 PetriNetUnfolderBase]: 2635/4056 cut-off events. [2024-06-28 02:58:07,068 INFO L125 PetriNetUnfolderBase]: For 89341/89356 co-relation queries the response was YES. [2024-06-28 02:58:07,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25064 conditions, 4056 events. 2635/4056 cut-off events. For 89341/89356 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20826 event pairs, 735 based on Foata normal form. 24/4077 useless extension candidates. Maximal degree in co-relation 25008. Up to 3213 conditions per place. [2024-06-28 02:58:07,100 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 138 selfloop transitions, 103 changer transitions 0/247 dead transitions. [2024-06-28 02:58:07,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 247 transitions, 3481 flow [2024-06-28 02:58:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:07,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-28 02:58:07,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796511627906977 [2024-06-28 02:58:07,101 INFO L175 Difference]: Start difference. First operand has 126 places, 202 transitions, 2587 flow. Second operand 8 states and 165 transitions. [2024-06-28 02:58:07,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 247 transitions, 3481 flow [2024-06-28 02:58:07,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 247 transitions, 3294 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:07,193 INFO L231 Difference]: Finished difference. Result has 130 places, 214 transitions, 2793 flow [2024-06-28 02:58:07,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2404, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2793, PETRI_PLACES=130, PETRI_TRANSITIONS=214} [2024-06-28 02:58:07,193 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 86 predicate places. [2024-06-28 02:58:07,193 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 214 transitions, 2793 flow [2024-06-28 02:58:07,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:07,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:07,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:07,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:58:07,194 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:07,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:07,194 INFO L85 PathProgramCache]: Analyzing trace with hash -448807548, now seen corresponding path program 4 times [2024-06-28 02:58:07,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:07,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485111280] [2024-06-28 02:58:07,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:07,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:07,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:07,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485111280] [2024-06-28 02:58:07,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485111280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:07,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:07,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:07,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374418956] [2024-06-28 02:58:07,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:07,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:07,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:07,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:07,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:07,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:07,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 214 transitions, 2793 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:07,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:07,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:07,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:08,606 INFO L124 PetriNetUnfolderBase]: 2671/4087 cut-off events. [2024-06-28 02:58:08,607 INFO L125 PetriNetUnfolderBase]: For 93610/93649 co-relation queries the response was YES. [2024-06-28 02:58:08,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26025 conditions, 4087 events. 2671/4087 cut-off events. For 93610/93649 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 21080 event pairs, 939 based on Foata normal form. 14/4069 useless extension candidates. Maximal degree in co-relation 25969. Up to 3570 conditions per place. [2024-06-28 02:58:08,640 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 133 selfloop transitions, 103 changer transitions 0/242 dead transitions. [2024-06-28 02:58:08,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 242 transitions, 3501 flow [2024-06-28 02:58:08,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:58:08,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:58:08,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-28 02:58:08,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4850498338870432 [2024-06-28 02:58:08,641 INFO L175 Difference]: Start difference. First operand has 130 places, 214 transitions, 2793 flow. Second operand 7 states and 146 transitions. [2024-06-28 02:58:08,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 242 transitions, 3501 flow [2024-06-28 02:58:08,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 242 transitions, 3302 flow, removed 75 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:08,761 INFO L231 Difference]: Finished difference. Result has 133 places, 214 transitions, 2823 flow [2024-06-28 02:58:08,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2598, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2823, PETRI_PLACES=133, PETRI_TRANSITIONS=214} [2024-06-28 02:58:08,762 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 89 predicate places. [2024-06-28 02:58:08,762 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 214 transitions, 2823 flow [2024-06-28 02:58:08,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:08,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:08,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:08,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:58:08,762 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:08,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:08,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1871914348, now seen corresponding path program 5 times [2024-06-28 02:58:08,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:08,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149941893] [2024-06-28 02:58:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:08,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:09,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:09,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149941893] [2024-06-28 02:58:09,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149941893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:09,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:09,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:09,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363278900] [2024-06-28 02:58:09,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:09,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:09,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:09,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:09,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:09,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:09,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 214 transitions, 2823 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:09,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:09,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:09,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:10,131 INFO L124 PetriNetUnfolderBase]: 2628/4042 cut-off events. [2024-06-28 02:58:10,132 INFO L125 PetriNetUnfolderBase]: For 89318/89331 co-relation queries the response was YES. [2024-06-28 02:58:10,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25197 conditions, 4042 events. 2628/4042 cut-off events. For 89318/89331 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 20820 event pairs, 1095 based on Foata normal form. 6/4030 useless extension candidates. Maximal degree in co-relation 25139. Up to 3781 conditions per place. [2024-06-28 02:58:10,162 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 200 selfloop transitions, 26 changer transitions 0/232 dead transitions. [2024-06-28 02:58:10,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 232 transitions, 3359 flow [2024-06-28 02:58:10,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:58:10,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:58:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 02:58:10,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43853820598006643 [2024-06-28 02:58:10,163 INFO L175 Difference]: Start difference. First operand has 133 places, 214 transitions, 2823 flow. Second operand 7 states and 132 transitions. [2024-06-28 02:58:10,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 232 transitions, 3359 flow [2024-06-28 02:58:10,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 232 transitions, 3017 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:10,269 INFO L231 Difference]: Finished difference. Result has 133 places, 214 transitions, 2548 flow [2024-06-28 02:58:10,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2481, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2548, PETRI_PLACES=133, PETRI_TRANSITIONS=214} [2024-06-28 02:58:10,270 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 89 predicate places. [2024-06-28 02:58:10,270 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 214 transitions, 2548 flow [2024-06-28 02:58:10,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:10,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:10,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:10,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:58:10,271 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:10,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:10,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1871914131, now seen corresponding path program 3 times [2024-06-28 02:58:10,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:10,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242564236] [2024-06-28 02:58:10,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:10,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:10,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:10,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:10,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242564236] [2024-06-28 02:58:10,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242564236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:10,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:10,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:10,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403345410] [2024-06-28 02:58:10,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:10,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:10,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:10,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:10,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:11,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:11,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 214 transitions, 2548 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:11,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:11,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:11,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:11,869 INFO L124 PetriNetUnfolderBase]: 2716/4182 cut-off events. [2024-06-28 02:58:11,869 INFO L125 PetriNetUnfolderBase]: For 90059/90069 co-relation queries the response was YES. [2024-06-28 02:58:11,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25746 conditions, 4182 events. 2716/4182 cut-off events. For 90059/90069 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 21698 event pairs, 1095 based on Foata normal form. 6/4171 useless extension candidates. Maximal degree in co-relation 25688. Up to 3852 conditions per place. [2024-06-28 02:58:11,893 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 219 selfloop transitions, 32 changer transitions 0/257 dead transitions. [2024-06-28 02:58:11,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 257 transitions, 3491 flow [2024-06-28 02:58:11,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:11,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:11,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 02:58:11,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-28 02:58:11,894 INFO L175 Difference]: Start difference. First operand has 133 places, 214 transitions, 2548 flow. Second operand 8 states and 154 transitions. [2024-06-28 02:58:11,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 257 transitions, 3491 flow [2024-06-28 02:58:11,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 257 transitions, 3348 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:11,953 INFO L231 Difference]: Finished difference. Result has 134 places, 226 transitions, 2699 flow [2024-06-28 02:58:11,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2405, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2699, PETRI_PLACES=134, PETRI_TRANSITIONS=226} [2024-06-28 02:58:11,954 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 90 predicate places. [2024-06-28 02:58:11,954 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 226 transitions, 2699 flow [2024-06-28 02:58:11,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:11,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:11,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:11,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:58:11,954 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:11,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:11,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1010988753, now seen corresponding path program 4 times [2024-06-28 02:58:11,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:11,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931801439] [2024-06-28 02:58:11,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:11,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:12,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:12,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:12,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931801439] [2024-06-28 02:58:12,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931801439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:12,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:12,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:12,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438583301] [2024-06-28 02:58:12,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:12,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:12,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:12,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:12,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:12,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:12,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 226 transitions, 2699 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:12,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:12,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:12,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:13,519 INFO L124 PetriNetUnfolderBase]: 2700/4159 cut-off events. [2024-06-28 02:58:13,519 INFO L125 PetriNetUnfolderBase]: For 95574/95584 co-relation queries the response was YES. [2024-06-28 02:58:13,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25998 conditions, 4159 events. 2700/4159 cut-off events. For 95574/95584 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 21552 event pairs, 1094 based on Foata normal form. 6/4148 useless extension candidates. Maximal degree in co-relation 25939. Up to 3878 conditions per place. [2024-06-28 02:58:13,551 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 224 selfloop transitions, 21 changer transitions 0/251 dead transitions. [2024-06-28 02:58:13,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 251 transitions, 3307 flow [2024-06-28 02:58:13,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 02:58:13,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-28 02:58:13,552 INFO L175 Difference]: Start difference. First operand has 134 places, 226 transitions, 2699 flow. Second operand 8 states and 149 transitions. [2024-06-28 02:58:13,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 251 transitions, 3307 flow [2024-06-28 02:58:13,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 251 transitions, 3153 flow, removed 66 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:13,630 INFO L231 Difference]: Finished difference. Result has 138 places, 226 transitions, 2598 flow [2024-06-28 02:58:13,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2598, PETRI_PLACES=138, PETRI_TRANSITIONS=226} [2024-06-28 02:58:13,631 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 94 predicate places. [2024-06-28 02:58:13,631 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 226 transitions, 2598 flow [2024-06-28 02:58:13,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:13,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:13,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:13,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:58:13,631 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:13,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:13,632 INFO L85 PathProgramCache]: Analyzing trace with hash 747308073, now seen corresponding path program 5 times [2024-06-28 02:58:13,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:13,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619306885] [2024-06-28 02:58:13,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:13,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:14,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:14,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:14,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619306885] [2024-06-28 02:58:14,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619306885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:14,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:14,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:14,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487172320] [2024-06-28 02:58:14,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:14,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:14,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:14,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:14,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:14,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:14,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 226 transitions, 2598 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:14,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:14,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:14,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:15,161 INFO L124 PetriNetUnfolderBase]: 2684/4136 cut-off events. [2024-06-28 02:58:15,162 INFO L125 PetriNetUnfolderBase]: For 99308/99318 co-relation queries the response was YES. [2024-06-28 02:58:15,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25822 conditions, 4136 events. 2684/4136 cut-off events. For 99308/99318 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 21436 event pairs, 1085 based on Foata normal form. 6/4125 useless extension candidates. Maximal degree in co-relation 25762. Up to 3759 conditions per place. [2024-06-28 02:58:15,195 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 206 selfloop transitions, 50 changer transitions 0/262 dead transitions. [2024-06-28 02:58:15,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 262 transitions, 3400 flow [2024-06-28 02:58:15,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:15,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:15,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 02:58:15,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-28 02:58:15,196 INFO L175 Difference]: Start difference. First operand has 138 places, 226 transitions, 2598 flow. Second operand 8 states and 154 transitions. [2024-06-28 02:58:15,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 262 transitions, 3400 flow [2024-06-28 02:58:15,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 262 transitions, 3341 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:15,266 INFO L231 Difference]: Finished difference. Result has 139 places, 232 transitions, 2779 flow [2024-06-28 02:58:15,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2539, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2779, PETRI_PLACES=139, PETRI_TRANSITIONS=232} [2024-06-28 02:58:15,266 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 95 predicate places. [2024-06-28 02:58:15,266 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 232 transitions, 2779 flow [2024-06-28 02:58:15,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:15,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:15,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:15,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:58:15,267 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:15,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:15,267 INFO L85 PathProgramCache]: Analyzing trace with hash 199599284, now seen corresponding path program 1 times [2024-06-28 02:58:15,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:15,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266839442] [2024-06-28 02:58:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:15,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:15,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:15,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266839442] [2024-06-28 02:58:15,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266839442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:15,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:15,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:15,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537729663] [2024-06-28 02:58:15,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:15,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:15,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:15,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:15,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:16,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:58:16,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 232 transitions, 2779 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:16,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:16,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:58:16,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:16,911 INFO L124 PetriNetUnfolderBase]: 3138/4719 cut-off events. [2024-06-28 02:58:16,911 INFO L125 PetriNetUnfolderBase]: For 118729/118737 co-relation queries the response was YES. [2024-06-28 02:58:16,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29496 conditions, 4719 events. 3138/4719 cut-off events. For 118729/118737 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 23333 event pairs, 1366 based on Foata normal form. 10/4720 useless extension candidates. Maximal degree in co-relation 29435. Up to 4537 conditions per place. [2024-06-28 02:58:16,952 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 208 selfloop transitions, 12 changer transitions 0/245 dead transitions. [2024-06-28 02:58:16,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 245 transitions, 3279 flow [2024-06-28 02:58:16,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:58:16,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:58:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 02:58:16,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40310077519379844 [2024-06-28 02:58:16,953 INFO L175 Difference]: Start difference. First operand has 139 places, 232 transitions, 2779 flow. Second operand 6 states and 104 transitions. [2024-06-28 02:58:16,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 245 transitions, 3279 flow [2024-06-28 02:58:17,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 245 transitions, 3106 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:17,072 INFO L231 Difference]: Finished difference. Result has 139 places, 235 transitions, 2670 flow [2024-06-28 02:58:17,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2606, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2670, PETRI_PLACES=139, PETRI_TRANSITIONS=235} [2024-06-28 02:58:17,073 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 95 predicate places. [2024-06-28 02:58:17,073 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 235 transitions, 2670 flow [2024-06-28 02:58:17,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:17,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:17,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:17,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:58:17,074 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:17,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:17,074 INFO L85 PathProgramCache]: Analyzing trace with hash 598858935, now seen corresponding path program 1 times [2024-06-28 02:58:17,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:17,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35897223] [2024-06-28 02:58:17,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:17,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:17,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:17,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35897223] [2024-06-28 02:58:17,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35897223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:17,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:17,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:17,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061878587] [2024-06-28 02:58:17,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:17,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:17,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:17,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:17,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:18,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:58:18,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 235 transitions, 2670 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:18,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:18,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:58:18,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:18,837 INFO L124 PetriNetUnfolderBase]: 2598/4090 cut-off events. [2024-06-28 02:58:18,837 INFO L125 PetriNetUnfolderBase]: For 108777/108804 co-relation queries the response was YES. [2024-06-28 02:58:18,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26230 conditions, 4090 events. 2598/4090 cut-off events. For 108777/108804 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 21910 event pairs, 710 based on Foata normal form. 22/4102 useless extension candidates. Maximal degree in co-relation 26168. Up to 3372 conditions per place. [2024-06-28 02:58:18,870 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 180 selfloop transitions, 68 changer transitions 0/276 dead transitions. [2024-06-28 02:58:18,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 276 transitions, 3464 flow [2024-06-28 02:58:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:18,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:18,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-28 02:58:18,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 02:58:18,871 INFO L175 Difference]: Start difference. First operand has 139 places, 235 transitions, 2670 flow. Second operand 9 states and 189 transitions. [2024-06-28 02:58:18,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 276 transitions, 3464 flow [2024-06-28 02:58:18,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 276 transitions, 3422 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:18,978 INFO L231 Difference]: Finished difference. Result has 145 places, 242 transitions, 2866 flow [2024-06-28 02:58:18,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2628, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2866, PETRI_PLACES=145, PETRI_TRANSITIONS=242} [2024-06-28 02:58:18,978 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 101 predicate places. [2024-06-28 02:58:18,978 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 242 transitions, 2866 flow [2024-06-28 02:58:18,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:18,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:18,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:18,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:58:18,979 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:18,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:18,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1659117835, now seen corresponding path program 2 times [2024-06-28 02:58:18,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:18,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33631219] [2024-06-28 02:58:18,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:18,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:19,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:19,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33631219] [2024-06-28 02:58:19,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33631219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:19,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:19,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:19,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479187919] [2024-06-28 02:58:19,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:19,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:19,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:19,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:19,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:19,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:58:19,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 242 transitions, 2866 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:19,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:19,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:58:19,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:20,510 INFO L124 PetriNetUnfolderBase]: 2684/4209 cut-off events. [2024-06-28 02:58:20,510 INFO L125 PetriNetUnfolderBase]: For 122823/122848 co-relation queries the response was YES. [2024-06-28 02:58:20,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27856 conditions, 4209 events. 2684/4209 cut-off events. For 122823/122848 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 22777 event pairs, 699 based on Foata normal form. 26/4207 useless extension candidates. Maximal degree in co-relation 27792. Up to 3420 conditions per place. [2024-06-28 02:58:20,548 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 179 selfloop transitions, 71 changer transitions 0/278 dead transitions. [2024-06-28 02:58:20,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 278 transitions, 3660 flow [2024-06-28 02:58:20,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:20,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:20,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-28 02:58:20,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4941860465116279 [2024-06-28 02:58:20,550 INFO L175 Difference]: Start difference. First operand has 145 places, 242 transitions, 2866 flow. Second operand 8 states and 170 transitions. [2024-06-28 02:58:20,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 278 transitions, 3660 flow [2024-06-28 02:58:20,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 278 transitions, 3571 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:20,698 INFO L231 Difference]: Finished difference. Result has 150 places, 249 transitions, 3046 flow [2024-06-28 02:58:20,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2777, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3046, PETRI_PLACES=150, PETRI_TRANSITIONS=249} [2024-06-28 02:58:20,699 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 106 predicate places. [2024-06-28 02:58:20,699 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 249 transitions, 3046 flow [2024-06-28 02:58:20,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:20,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:20,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:20,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:58:20,700 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:20,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:20,700 INFO L85 PathProgramCache]: Analyzing trace with hash 610537875, now seen corresponding path program 3 times [2024-06-28 02:58:20,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:20,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667692386] [2024-06-28 02:58:20,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:20,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:21,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:21,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:21,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667692386] [2024-06-28 02:58:21,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667692386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:21,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:21,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:21,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210769097] [2024-06-28 02:58:21,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:21,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:21,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:21,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:21,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:21,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:58:21,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 249 transitions, 3046 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:21,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:21,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:58:21,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:22,626 INFO L124 PetriNetUnfolderBase]: 2693/4239 cut-off events. [2024-06-28 02:58:22,627 INFO L125 PetriNetUnfolderBase]: For 129610/129647 co-relation queries the response was YES. [2024-06-28 02:58:22,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28722 conditions, 4239 events. 2693/4239 cut-off events. For 129610/129647 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 22943 event pairs, 705 based on Foata normal form. 26/4254 useless extension candidates. Maximal degree in co-relation 28654. Up to 3596 conditions per place. [2024-06-28 02:58:22,669 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 189 selfloop transitions, 64 changer transitions 0/281 dead transitions. [2024-06-28 02:58:22,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 281 transitions, 3704 flow [2024-06-28 02:58:22,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:22,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:22,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 02:58:22,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780361757105943 [2024-06-28 02:58:22,670 INFO L175 Difference]: Start difference. First operand has 150 places, 249 transitions, 3046 flow. Second operand 9 states and 185 transitions. [2024-06-28 02:58:22,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 281 transitions, 3704 flow [2024-06-28 02:58:22,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 281 transitions, 3582 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:22,811 INFO L231 Difference]: Finished difference. Result has 154 places, 251 transitions, 3095 flow [2024-06-28 02:58:22,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3095, PETRI_PLACES=154, PETRI_TRANSITIONS=251} [2024-06-28 02:58:22,812 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 110 predicate places. [2024-06-28 02:58:22,812 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 251 transitions, 3095 flow [2024-06-28 02:58:22,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:22,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:22,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:22,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:58:22,812 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:22,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:22,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1671200395, now seen corresponding path program 4 times [2024-06-28 02:58:22,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:22,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621456006] [2024-06-28 02:58:22,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:22,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:23,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:23,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:23,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621456006] [2024-06-28 02:58:23,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621456006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:23,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:23,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:23,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138279873] [2024-06-28 02:58:23,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:23,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:23,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:23,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:23,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:23,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:58:23,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 251 transitions, 3095 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:23,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:23,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:58:23,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:24,356 INFO L124 PetriNetUnfolderBase]: 2705/4260 cut-off events. [2024-06-28 02:58:24,356 INFO L125 PetriNetUnfolderBase]: For 129067/129100 co-relation queries the response was YES. [2024-06-28 02:58:24,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28744 conditions, 4260 events. 2705/4260 cut-off events. For 129067/129100 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 23018 event pairs, 686 based on Foata normal form. 38/4295 useless extension candidates. Maximal degree in co-relation 28675. Up to 3580 conditions per place. [2024-06-28 02:58:24,390 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 183 selfloop transitions, 69 changer transitions 0/280 dead transitions. [2024-06-28 02:58:24,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 280 transitions, 3763 flow [2024-06-28 02:58:24,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:24,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:24,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-28 02:58:24,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 02:58:24,392 INFO L175 Difference]: Start difference. First operand has 154 places, 251 transitions, 3095 flow. Second operand 8 states and 168 transitions. [2024-06-28 02:58:24,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 280 transitions, 3763 flow [2024-06-28 02:58:24,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 280 transitions, 3622 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:24,528 INFO L231 Difference]: Finished difference. Result has 155 places, 255 transitions, 3179 flow [2024-06-28 02:58:24,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2954, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3179, PETRI_PLACES=155, PETRI_TRANSITIONS=255} [2024-06-28 02:58:24,528 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 111 predicate places. [2024-06-28 02:58:24,528 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 255 transitions, 3179 flow [2024-06-28 02:58:24,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:24,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:24,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:24,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:58:24,529 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:24,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:24,529 INFO L85 PathProgramCache]: Analyzing trace with hash 598919509, now seen corresponding path program 1 times [2024-06-28 02:58:24,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:24,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974883342] [2024-06-28 02:58:24,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:24,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:25,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:25,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:25,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974883342] [2024-06-28 02:58:25,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974883342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:25,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:25,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:25,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436654466] [2024-06-28 02:58:25,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:25,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:25,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:25,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:25,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:25,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:25,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 255 transitions, 3179 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:25,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:25,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:25,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:26,384 INFO L124 PetriNetUnfolderBase]: 2873/4442 cut-off events. [2024-06-28 02:58:26,384 INFO L125 PetriNetUnfolderBase]: For 136735/136772 co-relation queries the response was YES. [2024-06-28 02:58:26,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30013 conditions, 4442 events. 2873/4442 cut-off events. For 136735/136772 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 23498 event pairs, 753 based on Foata normal form. 22/4454 useless extension candidates. Maximal degree in co-relation 29943. Up to 3667 conditions per place. [2024-06-28 02:58:26,424 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 178 selfloop transitions, 113 changer transitions 0/297 dead transitions. [2024-06-28 02:58:26,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 297 transitions, 4203 flow [2024-06-28 02:58:26,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:26,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:26,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 02:58:26,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780361757105943 [2024-06-28 02:58:26,425 INFO L175 Difference]: Start difference. First operand has 155 places, 255 transitions, 3179 flow. Second operand 9 states and 185 transitions. [2024-06-28 02:58:26,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 297 transitions, 4203 flow [2024-06-28 02:58:26,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 297 transitions, 4026 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:26,569 INFO L231 Difference]: Finished difference. Result has 158 places, 264 transitions, 3358 flow [2024-06-28 02:58:26,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3010, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3358, PETRI_PLACES=158, PETRI_TRANSITIONS=264} [2024-06-28 02:58:26,569 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 114 predicate places. [2024-06-28 02:58:26,569 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 264 transitions, 3358 flow [2024-06-28 02:58:26,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:26,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:26,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:26,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:58:26,570 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:26,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:26,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1671200519, now seen corresponding path program 2 times [2024-06-28 02:58:26,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:26,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590602072] [2024-06-28 02:58:26,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:26,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:27,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:27,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:27,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590602072] [2024-06-28 02:58:27,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590602072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:27,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:27,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:27,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266661771] [2024-06-28 02:58:27,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:27,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:27,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:27,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:27,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:27,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:27,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 264 transitions, 3358 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:27,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:27,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:27,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:28,203 INFO L124 PetriNetUnfolderBase]: 2905/4483 cut-off events. [2024-06-28 02:58:28,203 INFO L125 PetriNetUnfolderBase]: For 139135/139168 co-relation queries the response was YES. [2024-06-28 02:58:28,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30706 conditions, 4483 events. 2905/4483 cut-off events. For 139135/139168 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 23666 event pairs, 738 based on Foata normal form. 32/4512 useless extension candidates. Maximal degree in co-relation 30635. Up to 3702 conditions per place. [2024-06-28 02:58:28,241 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 183 selfloop transitions, 113 changer transitions 0/302 dead transitions. [2024-06-28 02:58:28,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 302 transitions, 4398 flow [2024-06-28 02:58:28,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-28 02:58:28,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4941860465116279 [2024-06-28 02:58:28,242 INFO L175 Difference]: Start difference. First operand has 158 places, 264 transitions, 3358 flow. Second operand 8 states and 170 transitions. [2024-06-28 02:58:28,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 302 transitions, 4398 flow [2024-06-28 02:58:28,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 302 transitions, 4265 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:28,389 INFO L231 Difference]: Finished difference. Result has 163 places, 274 transitions, 3642 flow [2024-06-28 02:58:28,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3233, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3642, PETRI_PLACES=163, PETRI_TRANSITIONS=274} [2024-06-28 02:58:28,390 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 119 predicate places. [2024-06-28 02:58:28,390 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 274 transitions, 3642 flow [2024-06-28 02:58:28,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:28,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:28,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:28,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:58:28,390 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:28,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1617402447, now seen corresponding path program 5 times [2024-06-28 02:58:28,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:28,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593836657] [2024-06-28 02:58:28,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:28,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:29,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:29,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593836657] [2024-06-28 02:58:29,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593836657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:29,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:29,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:29,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378788114] [2024-06-28 02:58:29,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:29,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:29,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:29,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:29,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:29,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:58:29,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 274 transitions, 3642 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:29,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:29,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:58:29,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:30,135 INFO L124 PetriNetUnfolderBase]: 2939/4637 cut-off events. [2024-06-28 02:58:30,135 INFO L125 PetriNetUnfolderBase]: For 150791/150812 co-relation queries the response was YES. [2024-06-28 02:58:30,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32200 conditions, 4637 events. 2939/4637 cut-off events. For 150791/150812 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 25726 event pairs, 530 based on Foata normal form. 22/4656 useless extension candidates. Maximal degree in co-relation 32125. Up to 3549 conditions per place. [2024-06-28 02:58:30,169 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 196 selfloop transitions, 109 changer transitions 0/339 dead transitions. [2024-06-28 02:58:30,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 339 transitions, 4874 flow [2024-06-28 02:58:30,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:30,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-28 02:58:30,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 02:58:30,171 INFO L175 Difference]: Start difference. First operand has 163 places, 274 transitions, 3642 flow. Second operand 9 states and 189 transitions. [2024-06-28 02:58:30,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 339 transitions, 4874 flow [2024-06-28 02:58:30,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 339 transitions, 4695 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:30,324 INFO L231 Difference]: Finished difference. Result has 169 places, 303 transitions, 4083 flow [2024-06-28 02:58:30,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3469, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4083, PETRI_PLACES=169, PETRI_TRANSITIONS=303} [2024-06-28 02:58:30,324 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 125 predicate places. [2024-06-28 02:58:30,324 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 303 transitions, 4083 flow [2024-06-28 02:58:30,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:30,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:30,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:30,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:58:30,325 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:30,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:30,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1133455281, now seen corresponding path program 3 times [2024-06-28 02:58:30,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:30,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273784995] [2024-06-28 02:58:30,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:30,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:31,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:31,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273784995] [2024-06-28 02:58:31,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273784995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:31,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:31,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:31,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909463888] [2024-06-28 02:58:31,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:31,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:31,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:31,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:31,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:31,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:31,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 303 transitions, 4083 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:31,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:31,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:31,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:32,345 INFO L124 PetriNetUnfolderBase]: 3117/4835 cut-off events. [2024-06-28 02:58:32,346 INFO L125 PetriNetUnfolderBase]: For 154588/154599 co-relation queries the response was YES. [2024-06-28 02:58:32,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34197 conditions, 4835 events. 3117/4835 cut-off events. For 154588/154599 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 26264 event pairs, 804 based on Foata normal form. 10/4842 useless extension candidates. Maximal degree in co-relation 34120. Up to 4210 conditions per place. [2024-06-28 02:58:32,391 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 234 selfloop transitions, 105 changer transitions 0/345 dead transitions. [2024-06-28 02:58:32,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 345 transitions, 5157 flow [2024-06-28 02:58:32,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:32,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 02:58:32,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780361757105943 [2024-06-28 02:58:32,393 INFO L175 Difference]: Start difference. First operand has 169 places, 303 transitions, 4083 flow. Second operand 9 states and 185 transitions. [2024-06-28 02:58:32,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 345 transitions, 5157 flow [2024-06-28 02:58:32,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 345 transitions, 5008 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:32,574 INFO L231 Difference]: Finished difference. Result has 174 places, 313 transitions, 4320 flow [2024-06-28 02:58:32,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3937, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4320, PETRI_PLACES=174, PETRI_TRANSITIONS=313} [2024-06-28 02:58:32,574 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 130 predicate places. [2024-06-28 02:58:32,574 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 313 transitions, 4320 flow [2024-06-28 02:58:32,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:32,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:32,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:32,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:58:32,575 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:32,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:32,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1133639607, now seen corresponding path program 1 times [2024-06-28 02:58:32,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:32,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495967828] [2024-06-28 02:58:32,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:32,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:33,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:33,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495967828] [2024-06-28 02:58:33,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495967828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:33,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:33,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316746145] [2024-06-28 02:58:33,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:33,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:33,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:33,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:33,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:33,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:33,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 313 transitions, 4320 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:33,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:33,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:33,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:34,394 INFO L124 PetriNetUnfolderBase]: 3201/4966 cut-off events. [2024-06-28 02:58:34,394 INFO L125 PetriNetUnfolderBase]: For 165639/165654 co-relation queries the response was YES. [2024-06-28 02:58:34,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35383 conditions, 4966 events. 3201/4966 cut-off events. For 165639/165654 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 27101 event pairs, 779 based on Foata normal form. 16/4979 useless extension candidates. Maximal degree in co-relation 35304. Up to 4057 conditions per place. [2024-06-28 02:58:34,439 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 249 selfloop transitions, 115 changer transitions 0/370 dead transitions. [2024-06-28 02:58:34,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 370 transitions, 5682 flow [2024-06-28 02:58:34,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:34,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-28 02:58:34,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909560723514212 [2024-06-28 02:58:34,440 INFO L175 Difference]: Start difference. First operand has 174 places, 313 transitions, 4320 flow. Second operand 9 states and 190 transitions. [2024-06-28 02:58:34,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 370 transitions, 5682 flow [2024-06-28 02:58:34,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 370 transitions, 5546 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:34,653 INFO L231 Difference]: Finished difference. Result has 179 places, 326 transitions, 4596 flow [2024-06-28 02:58:34,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4184, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4596, PETRI_PLACES=179, PETRI_TRANSITIONS=326} [2024-06-28 02:58:34,653 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 135 predicate places. [2024-06-28 02:58:34,654 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 326 transitions, 4596 flow [2024-06-28 02:58:34,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:34,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:34,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:34,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:58:34,654 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:34,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:34,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1133460117, now seen corresponding path program 2 times [2024-06-28 02:58:34,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:34,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665863400] [2024-06-28 02:58:34,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:34,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:35,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:35,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665863400] [2024-06-28 02:58:35,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665863400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:35,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:35,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:35,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970734962] [2024-06-28 02:58:35,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:35,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:35,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:35,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:35,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:35,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:35,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 326 transitions, 4596 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:35,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:35,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:35,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:36,476 INFO L124 PetriNetUnfolderBase]: 3263/5059 cut-off events. [2024-06-28 02:58:36,477 INFO L125 PetriNetUnfolderBase]: For 178659/178670 co-relation queries the response was YES. [2024-06-28 02:58:36,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37113 conditions, 5059 events. 3263/5059 cut-off events. For 178659/178670 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 27777 event pairs, 815 based on Foata normal form. 12/5068 useless extension candidates. Maximal degree in co-relation 37031. Up to 4112 conditions per place. [2024-06-28 02:58:36,525 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 244 selfloop transitions, 130 changer transitions 0/380 dead transitions. [2024-06-28 02:58:36,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 380 transitions, 6026 flow [2024-06-28 02:58:36,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-28 02:58:36,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49612403100775193 [2024-06-28 02:58:36,527 INFO L175 Difference]: Start difference. First operand has 179 places, 326 transitions, 4596 flow. Second operand 9 states and 192 transitions. [2024-06-28 02:58:36,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 380 transitions, 6026 flow [2024-06-28 02:58:36,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 380 transitions, 5778 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:36,762 INFO L231 Difference]: Finished difference. Result has 184 places, 339 transitions, 4895 flow [2024-06-28 02:58:36,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4389, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4895, PETRI_PLACES=184, PETRI_TRANSITIONS=339} [2024-06-28 02:58:36,763 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 140 predicate places. [2024-06-28 02:58:36,763 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 339 transitions, 4895 flow [2024-06-28 02:58:36,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:36,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:36,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:36,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:58:36,763 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:36,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:36,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1133459931, now seen corresponding path program 4 times [2024-06-28 02:58:36,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:36,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047563525] [2024-06-28 02:58:36,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:36,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:37,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:37,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047563525] [2024-06-28 02:58:37,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047563525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:37,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:37,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:37,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060500334] [2024-06-28 02:58:37,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:37,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:37,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:37,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:37,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:37,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:37,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 339 transitions, 4895 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:37,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:37,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:37,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:39,022 INFO L124 PetriNetUnfolderBase]: 3274/5081 cut-off events. [2024-06-28 02:58:39,023 INFO L125 PetriNetUnfolderBase]: For 188175/188186 co-relation queries the response was YES. [2024-06-28 02:58:39,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37759 conditions, 5081 events. 3274/5081 cut-off events. For 188175/188186 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 27889 event pairs, 810 based on Foata normal form. 10/5088 useless extension candidates. Maximal degree in co-relation 37675. Up to 4476 conditions per place. [2024-06-28 02:58:39,062 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 266 selfloop transitions, 99 changer transitions 0/371 dead transitions. [2024-06-28 02:58:39,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 371 transitions, 5809 flow [2024-06-28 02:58:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:39,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-28 02:58:39,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 02:58:39,064 INFO L175 Difference]: Start difference. First operand has 184 places, 339 transitions, 4895 flow. Second operand 9 states and 180 transitions. [2024-06-28 02:58:39,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 371 transitions, 5809 flow [2024-06-28 02:58:39,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 371 transitions, 5637 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:39,279 INFO L231 Difference]: Finished difference. Result has 188 places, 342 transitions, 4981 flow [2024-06-28 02:58:39,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4723, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4981, PETRI_PLACES=188, PETRI_TRANSITIONS=342} [2024-06-28 02:58:39,279 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 144 predicate places. [2024-06-28 02:58:39,279 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 342 transitions, 4981 flow [2024-06-28 02:58:39,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:39,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:39,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:39,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:58:39,280 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:39,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:39,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1133632911, now seen corresponding path program 5 times [2024-06-28 02:58:39,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:39,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358563495] [2024-06-28 02:58:39,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:39,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:40,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:40,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358563495] [2024-06-28 02:58:40,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358563495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:40,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:40,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:40,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119939757] [2024-06-28 02:58:40,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:40,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:40,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:40,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:40,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:40,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:40,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 342 transitions, 4981 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:40,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:40,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:40,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:41,651 INFO L124 PetriNetUnfolderBase]: 3279/5088 cut-off events. [2024-06-28 02:58:41,651 INFO L125 PetriNetUnfolderBase]: For 199406/199421 co-relation queries the response was YES. [2024-06-28 02:58:41,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37979 conditions, 5088 events. 3279/5088 cut-off events. For 199406/199421 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 27919 event pairs, 807 based on Foata normal form. 14/5099 useless extension candidates. Maximal degree in co-relation 37894. Up to 4483 conditions per place. [2024-06-28 02:58:41,703 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 272 selfloop transitions, 95 changer transitions 0/373 dead transitions. [2024-06-28 02:58:41,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 373 transitions, 5901 flow [2024-06-28 02:58:41,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:41,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:41,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 02:58:41,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2024-06-28 02:58:41,704 INFO L175 Difference]: Start difference. First operand has 188 places, 342 transitions, 4981 flow. Second operand 9 states and 178 transitions. [2024-06-28 02:58:41,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 373 transitions, 5901 flow [2024-06-28 02:58:41,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 373 transitions, 5685 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:41,952 INFO L231 Difference]: Finished difference. Result has 190 places, 345 transitions, 5021 flow [2024-06-28 02:58:41,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4765, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5021, PETRI_PLACES=190, PETRI_TRANSITIONS=345} [2024-06-28 02:58:41,953 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 146 predicate places. [2024-06-28 02:58:41,953 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 345 transitions, 5021 flow [2024-06-28 02:58:41,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:41,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:41,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:41,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:58:41,953 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:41,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:41,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1133633097, now seen corresponding path program 3 times [2024-06-28 02:58:41,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:41,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228350304] [2024-06-28 02:58:41,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:41,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:42,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:42,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228350304] [2024-06-28 02:58:42,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228350304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:42,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:42,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:42,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998402928] [2024-06-28 02:58:42,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:42,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:42,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:42,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:42,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:42,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:42,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 345 transitions, 5021 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:42,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:42,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:42,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:43,880 INFO L124 PetriNetUnfolderBase]: 3269/5070 cut-off events. [2024-06-28 02:58:43,880 INFO L125 PetriNetUnfolderBase]: For 208494/208509 co-relation queries the response was YES. [2024-06-28 02:58:43,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38083 conditions, 5070 events. 3269/5070 cut-off events. For 208494/208509 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 27792 event pairs, 786 based on Foata normal form. 16/5083 useless extension candidates. Maximal degree in co-relation 37997. Up to 4127 conditions per place. [2024-06-28 02:58:43,931 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 257 selfloop transitions, 122 changer transitions 0/385 dead transitions. [2024-06-28 02:58:43,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 385 transitions, 6236 flow [2024-06-28 02:58:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:43,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-06-28 02:58:43,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935400516795866 [2024-06-28 02:58:43,933 INFO L175 Difference]: Start difference. First operand has 190 places, 345 transitions, 5021 flow. Second operand 9 states and 191 transitions. [2024-06-28 02:58:43,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 385 transitions, 6236 flow [2024-06-28 02:58:44,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 385 transitions, 6022 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:44,260 INFO L231 Difference]: Finished difference. Result has 192 places, 345 transitions, 5059 flow [2024-06-28 02:58:44,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4807, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5059, PETRI_PLACES=192, PETRI_TRANSITIONS=345} [2024-06-28 02:58:44,260 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 148 predicate places. [2024-06-28 02:58:44,261 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 345 transitions, 5059 flow [2024-06-28 02:58:44,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:44,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:44,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:44,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:58:44,261 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:44,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:44,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1477548617, now seen corresponding path program 1 times [2024-06-28 02:58:44,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:44,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905431457] [2024-06-28 02:58:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:44,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:44,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:44,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905431457] [2024-06-28 02:58:44,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905431457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:44,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:44,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:58:44,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749020575] [2024-06-28 02:58:44,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:44,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:58:44,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:44,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:58:44,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:58:44,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:58:44,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 345 transitions, 5059 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:44,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:44,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:58:44,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:45,844 INFO L124 PetriNetUnfolderBase]: 3822/5775 cut-off events. [2024-06-28 02:58:45,845 INFO L125 PetriNetUnfolderBase]: For 248680/248685 co-relation queries the response was YES. [2024-06-28 02:58:45,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43199 conditions, 5775 events. 3822/5775 cut-off events. For 248680/248685 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30386 event pairs, 1388 based on Foata normal form. 6/5775 useless extension candidates. Maximal degree in co-relation 43112. Up to 5487 conditions per place. [2024-06-28 02:58:45,906 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 315 selfloop transitions, 21 changer transitions 0/371 dead transitions. [2024-06-28 02:58:45,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 371 transitions, 6001 flow [2024-06-28 02:58:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:58:45,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:58:45,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 02:58:45,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42524916943521596 [2024-06-28 02:58:45,907 INFO L175 Difference]: Start difference. First operand has 192 places, 345 transitions, 5059 flow. Second operand 7 states and 128 transitions. [2024-06-28 02:58:45,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 371 transitions, 6001 flow [2024-06-28 02:58:46,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 371 transitions, 5773 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:46,353 INFO L231 Difference]: Finished difference. Result has 194 places, 353 transitions, 5029 flow [2024-06-28 02:58:46,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4835, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5029, PETRI_PLACES=194, PETRI_TRANSITIONS=353} [2024-06-28 02:58:46,354 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 150 predicate places. [2024-06-28 02:58:46,354 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 353 transitions, 5029 flow [2024-06-28 02:58:46,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:46,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:46,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:46,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:58:46,355 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:46,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:46,355 INFO L85 PathProgramCache]: Analyzing trace with hash 836874605, now seen corresponding path program 6 times [2024-06-28 02:58:46,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:46,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865951107] [2024-06-28 02:58:46,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:46,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:47,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:47,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865951107] [2024-06-28 02:58:47,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865951107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:47,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:47,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:47,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505845924] [2024-06-28 02:58:47,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:47,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:47,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:47,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:47,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:47,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:58:47,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 353 transitions, 5029 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:47,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:47,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:58:47,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:48,418 INFO L124 PetriNetUnfolderBase]: 3270/5075 cut-off events. [2024-06-28 02:58:48,418 INFO L125 PetriNetUnfolderBase]: For 254245/254319 co-relation queries the response was YES. [2024-06-28 02:58:48,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39870 conditions, 5075 events. 3270/5075 cut-off events. For 254245/254319 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 28250 event pairs, 742 based on Foata normal form. 32/5055 useless extension candidates. Maximal degree in co-relation 39781. Up to 3957 conditions per place. [2024-06-28 02:58:48,476 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 231 selfloop transitions, 117 changer transitions 0/388 dead transitions. [2024-06-28 02:58:48,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 388 transitions, 6061 flow [2024-06-28 02:58:48,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:48,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:48,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-28 02:58:48,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 02:58:48,477 INFO L175 Difference]: Start difference. First operand has 194 places, 353 transitions, 5029 flow. Second operand 8 states and 168 transitions. [2024-06-28 02:58:48,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 388 transitions, 6061 flow [2024-06-28 02:58:48,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 388 transitions, 6014 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 02:58:48,889 INFO L231 Difference]: Finished difference. Result has 200 places, 357 transitions, 5304 flow [2024-06-28 02:58:48,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4982, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5304, PETRI_PLACES=200, PETRI_TRANSITIONS=357} [2024-06-28 02:58:48,889 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 156 predicate places. [2024-06-28 02:58:48,889 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 357 transitions, 5304 flow [2024-06-28 02:58:48,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:48,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:48,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:48,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:58:48,890 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:48,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:48,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1387826440, now seen corresponding path program 1 times [2024-06-28 02:58:48,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:48,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799880111] [2024-06-28 02:58:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:48,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:49,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:49,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799880111] [2024-06-28 02:58:49,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799880111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:49,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:49,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:49,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122806886] [2024-06-28 02:58:49,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:49,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:49,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:49,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:49,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:49,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:49,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 357 transitions, 5304 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:49,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:49,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:49,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:51,231 INFO L124 PetriNetUnfolderBase]: 3400/5251 cut-off events. [2024-06-28 02:58:51,231 INFO L125 PetriNetUnfolderBase]: For 250781/250840 co-relation queries the response was YES. [2024-06-28 02:58:51,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41098 conditions, 5251 events. 3400/5251 cut-off events. For 250781/250840 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 28888 event pairs, 864 based on Foata normal form. 40/5274 useless extension candidates. Maximal degree in co-relation 41007. Up to 3718 conditions per place. [2024-06-28 02:58:51,287 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 231 selfloop transitions, 184 changer transitions 0/423 dead transitions. [2024-06-28 02:58:51,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 423 transitions, 7113 flow [2024-06-28 02:58:51,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:51,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2024-06-28 02:58:51,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023255813953489 [2024-06-28 02:58:51,288 INFO L175 Difference]: Start difference. First operand has 200 places, 357 transitions, 5304 flow. Second operand 10 states and 216 transitions. [2024-06-28 02:58:51,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 423 transitions, 7113 flow [2024-06-28 02:58:51,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 423 transitions, 6857 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:51,654 INFO L231 Difference]: Finished difference. Result has 204 places, 373 transitions, 5726 flow [2024-06-28 02:58:51,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5076, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5726, PETRI_PLACES=204, PETRI_TRANSITIONS=373} [2024-06-28 02:58:51,655 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 160 predicate places. [2024-06-28 02:58:51,655 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 373 transitions, 5726 flow [2024-06-28 02:58:51,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:51,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:51,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:51,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:58:51,655 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:51,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:51,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1736205541, now seen corresponding path program 6 times [2024-06-28 02:58:51,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:51,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549052877] [2024-06-28 02:58:51,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:51,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:52,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:52,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549052877] [2024-06-28 02:58:52,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549052877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:52,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:52,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:52,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496192283] [2024-06-28 02:58:52,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:52,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:52,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:52,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:52,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:52,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:52,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 373 transitions, 5726 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:52,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:52,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:52,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:53,643 INFO L124 PetriNetUnfolderBase]: 3434/5302 cut-off events. [2024-06-28 02:58:53,643 INFO L125 PetriNetUnfolderBase]: For 245372/245408 co-relation queries the response was YES. [2024-06-28 02:58:53,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42126 conditions, 5302 events. 3434/5302 cut-off events. For 245372/245408 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 29190 event pairs, 944 based on Foata normal form. 27/5312 useless extension candidates. Maximal degree in co-relation 42035. Up to 4435 conditions per place. [2024-06-28 02:58:53,696 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 258 selfloop transitions, 149 changer transitions 0/415 dead transitions. [2024-06-28 02:58:53,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 415 transitions, 7048 flow [2024-06-28 02:58:53,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:53,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-28 02:58:53,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738372093023256 [2024-06-28 02:58:53,698 INFO L175 Difference]: Start difference. First operand has 204 places, 373 transitions, 5726 flow. Second operand 8 states and 163 transitions. [2024-06-28 02:58:53,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 415 transitions, 7048 flow [2024-06-28 02:58:54,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 415 transitions, 6985 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 02:58:54,128 INFO L231 Difference]: Finished difference. Result has 210 places, 385 transitions, 6207 flow [2024-06-28 02:58:54,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5663, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6207, PETRI_PLACES=210, PETRI_TRANSITIONS=385} [2024-06-28 02:58:54,128 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 166 predicate places. [2024-06-28 02:58:54,129 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 385 transitions, 6207 flow [2024-06-28 02:58:54,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:54,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:54,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:54,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:58:54,129 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:54,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:54,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1146223187, now seen corresponding path program 7 times [2024-06-28 02:58:54,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:54,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568344687] [2024-06-28 02:58:54,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:54,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:55,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:55,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568344687] [2024-06-28 02:58:55,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568344687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:55,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:55,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:55,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340690064] [2024-06-28 02:58:55,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:55,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:55,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:55,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:55,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:55,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:58:55,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 385 transitions, 6207 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:55,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:55,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:58:55,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:56,216 INFO L124 PetriNetUnfolderBase]: 3276/5127 cut-off events. [2024-06-28 02:58:56,216 INFO L125 PetriNetUnfolderBase]: For 259384/259422 co-relation queries the response was YES. [2024-06-28 02:58:56,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41448 conditions, 5127 events. 3276/5127 cut-off events. For 259384/259422 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 28906 event pairs, 902 based on Foata normal form. 30/5129 useless extension candidates. Maximal degree in co-relation 41353. Up to 4284 conditions per place. [2024-06-28 02:58:56,269 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 276 selfloop transitions, 100 changer transitions 0/418 dead transitions. [2024-06-28 02:58:56,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 418 transitions, 7156 flow [2024-06-28 02:58:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:56,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:56,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-28 02:58:56,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4754521963824289 [2024-06-28 02:58:56,270 INFO L175 Difference]: Start difference. First operand has 210 places, 385 transitions, 6207 flow. Second operand 9 states and 184 transitions. [2024-06-28 02:58:56,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 418 transitions, 7156 flow [2024-06-28 02:58:56,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 418 transitions, 6825 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:56,610 INFO L231 Difference]: Finished difference. Result has 215 places, 385 transitions, 6108 flow [2024-06-28 02:58:56,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5876, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6108, PETRI_PLACES=215, PETRI_TRANSITIONS=385} [2024-06-28 02:58:56,611 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 171 predicate places. [2024-06-28 02:58:56,611 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 385 transitions, 6108 flow [2024-06-28 02:58:56,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:56,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:56,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:56,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:58:56,611 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:56,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:56,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1173175032, now seen corresponding path program 2 times [2024-06-28 02:58:56,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:56,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747777023] [2024-06-28 02:58:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:56,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:57,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:57,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747777023] [2024-06-28 02:58:57,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747777023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:57,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:57,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:57,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463266585] [2024-06-28 02:58:57,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:57,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:57,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:57,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:57,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:57,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:57,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 385 transitions, 6108 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:57,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:57,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:57,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:58,723 INFO L124 PetriNetUnfolderBase]: 3462/5342 cut-off events. [2024-06-28 02:58:58,724 INFO L125 PetriNetUnfolderBase]: For 272365/272401 co-relation queries the response was YES. [2024-06-28 02:58:58,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43129 conditions, 5342 events. 3462/5342 cut-off events. For 272365/272401 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 29532 event pairs, 960 based on Foata normal form. 24/5341 useless extension candidates. Maximal degree in co-relation 43033. Up to 3771 conditions per place. [2024-06-28 02:58:58,781 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 223 selfloop transitions, 197 changer transitions 0/428 dead transitions. [2024-06-28 02:58:58,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 428 transitions, 7514 flow [2024-06-28 02:58:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:58,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-28 02:58:58,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 02:58:58,782 INFO L175 Difference]: Start difference. First operand has 215 places, 385 transitions, 6108 flow. Second operand 9 states and 189 transitions. [2024-06-28 02:58:58,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 428 transitions, 7514 flow [2024-06-28 02:58:59,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 428 transitions, 7265 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:59,128 INFO L231 Difference]: Finished difference. Result has 216 places, 388 transitions, 6323 flow [2024-06-28 02:58:59,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5867, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6323, PETRI_PLACES=216, PETRI_TRANSITIONS=388} [2024-06-28 02:58:59,129 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 172 predicate places. [2024-06-28 02:58:59,129 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 388 transitions, 6323 flow [2024-06-28 02:58:59,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:59,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:59,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:59,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:58:59,129 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:59,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:59,129 INFO L85 PathProgramCache]: Analyzing trace with hash -267965497, now seen corresponding path program 7 times [2024-06-28 02:58:59,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:59,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355805766] [2024-06-28 02:58:59,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:59,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:00,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:00,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355805766] [2024-06-28 02:59:00,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355805766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:00,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:00,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:59:00,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471064991] [2024-06-28 02:59:00,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:00,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:59:00,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:00,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:59:00,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:59:00,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:00,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 388 transitions, 6323 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:00,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:00,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:00,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:01,207 INFO L124 PetriNetUnfolderBase]: 3473/5363 cut-off events. [2024-06-28 02:59:01,207 INFO L125 PetriNetUnfolderBase]: For 265888/265910 co-relation queries the response was YES. [2024-06-28 02:59:01,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43330 conditions, 5363 events. 3473/5363 cut-off events. For 265888/265910 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 29656 event pairs, 973 based on Foata normal form. 16/5362 useless extension candidates. Maximal degree in co-relation 43233. Up to 4742 conditions per place. [2024-06-28 02:59:01,270 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 311 selfloop transitions, 108 changer transitions 0/427 dead transitions. [2024-06-28 02:59:01,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 427 transitions, 7540 flow [2024-06-28 02:59:01,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:59:01,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:59:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 02:59:01,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-28 02:59:01,271 INFO L175 Difference]: Start difference. First operand has 216 places, 388 transitions, 6323 flow. Second operand 8 states and 158 transitions. [2024-06-28 02:59:01,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 427 transitions, 7540 flow [2024-06-28 02:59:01,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 427 transitions, 7174 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:01,678 INFO L231 Difference]: Finished difference. Result has 217 places, 400 transitions, 6399 flow [2024-06-28 02:59:01,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5965, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6399, PETRI_PLACES=217, PETRI_TRANSITIONS=400} [2024-06-28 02:59:01,679 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 173 predicate places. [2024-06-28 02:59:01,679 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 400 transitions, 6399 flow [2024-06-28 02:59:01,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:01,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:01,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:01,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:59:01,680 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:01,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:01,680 INFO L85 PathProgramCache]: Analyzing trace with hash -378792667, now seen corresponding path program 8 times [2024-06-28 02:59:01,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:01,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627091090] [2024-06-28 02:59:01,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:01,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:02,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:02,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627091090] [2024-06-28 02:59:02,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627091090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:02,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:02,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:59:02,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880416140] [2024-06-28 02:59:02,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:02,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:59:02,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:02,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:59:02,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:59:02,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:02,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 400 transitions, 6399 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:02,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:02,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:02,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:03,665 INFO L124 PetriNetUnfolderBase]: 3498/5401 cut-off events. [2024-06-28 02:59:03,665 INFO L125 PetriNetUnfolderBase]: For 265176/265198 co-relation queries the response was YES. [2024-06-28 02:59:03,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43280 conditions, 5401 events. 3498/5401 cut-off events. For 265176/265198 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 29915 event pairs, 973 based on Foata normal form. 16/5400 useless extension candidates. Maximal degree in co-relation 43183. Up to 4725 conditions per place. [2024-06-28 02:59:03,727 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 301 selfloop transitions, 129 changer transitions 0/438 dead transitions. [2024-06-28 02:59:03,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 438 transitions, 7647 flow [2024-06-28 02:59:03,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:59:03,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:59:03,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 02:59:03,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4622093023255814 [2024-06-28 02:59:03,728 INFO L175 Difference]: Start difference. First operand has 217 places, 400 transitions, 6399 flow. Second operand 8 states and 159 transitions. [2024-06-28 02:59:03,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 438 transitions, 7647 flow [2024-06-28 02:59:04,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 438 transitions, 7375 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 02:59:04,112 INFO L231 Difference]: Finished difference. Result has 219 places, 409 transitions, 6588 flow [2024-06-28 02:59:04,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6127, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6588, PETRI_PLACES=219, PETRI_TRANSITIONS=409} [2024-06-28 02:59:04,113 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 175 predicate places. [2024-06-28 02:59:04,113 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 409 transitions, 6588 flow [2024-06-28 02:59:04,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:04,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:04,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:04,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:59:04,113 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:04,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:04,114 INFO L85 PathProgramCache]: Analyzing trace with hash -263501497, now seen corresponding path program 9 times [2024-06-28 02:59:04,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:04,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071084493] [2024-06-28 02:59:04,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:04,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:05,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:05,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071084493] [2024-06-28 02:59:05,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071084493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:05,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:05,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:59:05,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795729096] [2024-06-28 02:59:05,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:05,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:59:05,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:05,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:59:05,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:59:05,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:05,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 409 transitions, 6588 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:05,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:05,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:05,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:06,035 INFO L124 PetriNetUnfolderBase]: 3531/5433 cut-off events. [2024-06-28 02:59:06,035 INFO L125 PetriNetUnfolderBase]: For 278264/278291 co-relation queries the response was YES. [2024-06-28 02:59:06,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44064 conditions, 5433 events. 3531/5433 cut-off events. For 278264/278291 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 29988 event pairs, 933 based on Foata normal form. 20/5436 useless extension candidates. Maximal degree in co-relation 43966. Up to 4691 conditions per place. [2024-06-28 02:59:06,095 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 299 selfloop transitions, 146 changer transitions 0/453 dead transitions. [2024-06-28 02:59:06,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 453 transitions, 8046 flow [2024-06-28 02:59:06,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:59:06,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:59:06,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-28 02:59:06,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 02:59:06,096 INFO L175 Difference]: Start difference. First operand has 219 places, 409 transitions, 6588 flow. Second operand 8 states and 168 transitions. [2024-06-28 02:59:06,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 453 transitions, 8046 flow [2024-06-28 02:59:06,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 453 transitions, 7719 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-28 02:59:06,587 INFO L231 Difference]: Finished difference. Result has 221 places, 418 transitions, 6756 flow [2024-06-28 02:59:06,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6261, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6756, PETRI_PLACES=221, PETRI_TRANSITIONS=418} [2024-06-28 02:59:06,588 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 177 predicate places. [2024-06-28 02:59:06,588 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 418 transitions, 6756 flow [2024-06-28 02:59:06,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:06,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:06,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:06,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:59:06,589 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:06,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash -263317171, now seen corresponding path program 4 times [2024-06-28 02:59:06,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:06,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896109889] [2024-06-28 02:59:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:06,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:07,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:07,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896109889] [2024-06-28 02:59:07,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896109889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:07,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:07,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:59:07,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335198480] [2024-06-28 02:59:07,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:07,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:59:07,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:07,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:59:07,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:59:07,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:07,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 418 transitions, 6756 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:07,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:07,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:07,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:08,584 INFO L124 PetriNetUnfolderBase]: 3645/5616 cut-off events. [2024-06-28 02:59:08,584 INFO L125 PetriNetUnfolderBase]: For 302476/302498 co-relation queries the response was YES. [2024-06-28 02:59:08,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45999 conditions, 5616 events. 3645/5616 cut-off events. For 302476/302498 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 31340 event pairs, 948 based on Foata normal form. 20/5619 useless extension candidates. Maximal degree in co-relation 45901. Up to 4521 conditions per place. [2024-06-28 02:59:08,634 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 299 selfloop transitions, 169 changer transitions 0/476 dead transitions. [2024-06-28 02:59:08,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 476 transitions, 8676 flow [2024-06-28 02:59:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:59:08,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:59:08,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-28 02:59:08,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48546511627906974 [2024-06-28 02:59:08,635 INFO L175 Difference]: Start difference. First operand has 221 places, 418 transitions, 6756 flow. Second operand 8 states and 167 transitions. [2024-06-28 02:59:08,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 476 transitions, 8676 flow [2024-06-28 02:59:09,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 476 transitions, 8235 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:09,048 INFO L231 Difference]: Finished difference. Result has 222 places, 440 transitions, 7140 flow [2024-06-28 02:59:09,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6323, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7140, PETRI_PLACES=222, PETRI_TRANSITIONS=440} [2024-06-28 02:59:09,049 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 178 predicate places. [2024-06-28 02:59:09,049 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 440 transitions, 7140 flow [2024-06-28 02:59:09,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:09,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:09,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:09,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:59:09,050 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:09,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:09,050 INFO L85 PathProgramCache]: Analyzing trace with hash -263323681, now seen corresponding path program 5 times [2024-06-28 02:59:09,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:09,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834616968] [2024-06-28 02:59:09,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:09,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:09,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:09,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:09,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834616968] [2024-06-28 02:59:09,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834616968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:09,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:09,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:59:09,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079590437] [2024-06-28 02:59:09,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:09,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:59:09,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:09,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:59:09,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:59:09,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:09,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 440 transitions, 7140 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:09,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:09,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:09,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:11,009 INFO L124 PetriNetUnfolderBase]: 3675/5666 cut-off events. [2024-06-28 02:59:11,009 INFO L125 PetriNetUnfolderBase]: For 302714/302736 co-relation queries the response was YES. [2024-06-28 02:59:11,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46420 conditions, 5666 events. 3675/5666 cut-off events. For 302714/302736 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 31707 event pairs, 951 based on Foata normal form. 20/5669 useless extension candidates. Maximal degree in co-relation 46322. Up to 4548 conditions per place. [2024-06-28 02:59:11,068 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 307 selfloop transitions, 173 changer transitions 0/488 dead transitions. [2024-06-28 02:59:11,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 488 transitions, 8867 flow [2024-06-28 02:59:11,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:59:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:59:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 02:59:11,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49127906976744184 [2024-06-28 02:59:11,069 INFO L175 Difference]: Start difference. First operand has 222 places, 440 transitions, 7140 flow. Second operand 8 states and 169 transitions. [2024-06-28 02:59:11,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 488 transitions, 8867 flow [2024-06-28 02:59:11,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 488 transitions, 8437 flow, removed 110 selfloop flow, removed 5 redundant places. [2024-06-28 02:59:11,517 INFO L231 Difference]: Finished difference. Result has 225 places, 448 transitions, 7270 flow [2024-06-28 02:59:11,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6766, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7270, PETRI_PLACES=225, PETRI_TRANSITIONS=448} [2024-06-28 02:59:11,517 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 181 predicate places. [2024-06-28 02:59:11,518 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 448 transitions, 7270 flow [2024-06-28 02:59:11,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:11,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:11,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:11,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:59:11,518 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:11,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:11,519 INFO L85 PathProgramCache]: Analyzing trace with hash -263323867, now seen corresponding path program 10 times [2024-06-28 02:59:11,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:11,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811249253] [2024-06-28 02:59:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:11,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:12,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:12,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811249253] [2024-06-28 02:59:12,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811249253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:12,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:12,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:59:12,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224551565] [2024-06-28 02:59:12,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:12,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:59:12,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:12,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:59:12,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:59:12,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:12,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 448 transitions, 7270 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:12,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:12,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:12,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:13,878 INFO L124 PetriNetUnfolderBase]: 3707/5711 cut-off events. [2024-06-28 02:59:13,878 INFO L125 PetriNetUnfolderBase]: For 301811/301833 co-relation queries the response was YES. [2024-06-28 02:59:13,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46561 conditions, 5711 events. 3707/5711 cut-off events. For 301811/301833 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 31955 event pairs, 999 based on Foata normal form. 17/5711 useless extension candidates. Maximal degree in co-relation 46463. Up to 5076 conditions per place. [2024-06-28 02:59:13,937 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 368 selfloop transitions, 111 changer transitions 0/487 dead transitions. [2024-06-28 02:59:13,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 487 transitions, 8667 flow [2024-06-28 02:59:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:59:13,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:59:13,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 02:59:13,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563953488372093 [2024-06-28 02:59:13,938 INFO L175 Difference]: Start difference. First operand has 225 places, 448 transitions, 7270 flow. Second operand 8 states and 157 transitions. [2024-06-28 02:59:13,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 487 transitions, 8667 flow [2024-06-28 02:59:14,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 487 transitions, 8339 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 02:59:14,325 INFO L231 Difference]: Finished difference. Result has 227 places, 460 transitions, 7461 flow [2024-06-28 02:59:14,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6942, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7461, PETRI_PLACES=227, PETRI_TRANSITIONS=460} [2024-06-28 02:59:14,326 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 183 predicate places. [2024-06-28 02:59:14,326 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 460 transitions, 7461 flow [2024-06-28 02:59:14,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:14,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:14,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:14,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:59:14,327 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:14,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:14,327 INFO L85 PathProgramCache]: Analyzing trace with hash -263496847, now seen corresponding path program 11 times [2024-06-28 02:59:14,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:14,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023068137] [2024-06-28 02:59:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:14,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:15,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:15,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023068137] [2024-06-28 02:59:15,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023068137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:15,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:15,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:59:15,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115162014] [2024-06-28 02:59:15,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:15,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:59:15,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:15,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:59:15,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:59:15,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:15,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 460 transitions, 7461 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:15,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:15,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:15,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:16,435 INFO L124 PetriNetUnfolderBase]: 3742/5761 cut-off events. [2024-06-28 02:59:16,436 INFO L125 PetriNetUnfolderBase]: For 304288/304307 co-relation queries the response was YES. [2024-06-28 02:59:16,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46770 conditions, 5761 events. 3742/5761 cut-off events. For 304288/304307 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 32273 event pairs, 1001 based on Foata normal form. 12/5754 useless extension candidates. Maximal degree in co-relation 46672. Up to 5128 conditions per place. [2024-06-28 02:59:16,492 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 376 selfloop transitions, 115 changer transitions 0/499 dead transitions. [2024-06-28 02:59:16,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 499 transitions, 8869 flow [2024-06-28 02:59:16,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:59:16,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:59:16,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-28 02:59:16,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680232558139535 [2024-06-28 02:59:16,493 INFO L175 Difference]: Start difference. First operand has 227 places, 460 transitions, 7461 flow. Second operand 8 states and 161 transitions. [2024-06-28 02:59:16,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 499 transitions, 8869 flow [2024-06-28 02:59:16,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 499 transitions, 8545 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-06-28 02:59:16,986 INFO L231 Difference]: Finished difference. Result has 230 places, 469 transitions, 7606 flow [2024-06-28 02:59:16,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7137, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7606, PETRI_PLACES=230, PETRI_TRANSITIONS=469} [2024-06-28 02:59:16,986 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 186 predicate places. [2024-06-28 02:59:16,986 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 469 transitions, 7606 flow [2024-06-28 02:59:16,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:16,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:16,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:16,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:59:16,987 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:16,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:16,987 INFO L85 PathProgramCache]: Analyzing trace with hash -263496661, now seen corresponding path program 6 times [2024-06-28 02:59:16,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:16,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062528849] [2024-06-28 02:59:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:16,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:17,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:17,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062528849] [2024-06-28 02:59:17,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062528849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:17,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:17,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:59:17,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453859088] [2024-06-28 02:59:17,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:17,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:59:17,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:17,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:59:17,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:59:17,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:17,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 469 transitions, 7606 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:17,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:17,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:17,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:18,987 INFO L124 PetriNetUnfolderBase]: 3720/5727 cut-off events. [2024-06-28 02:59:18,987 INFO L125 PetriNetUnfolderBase]: For 300685/300704 co-relation queries the response was YES. [2024-06-28 02:59:19,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46215 conditions, 5727 events. 3720/5727 cut-off events. For 300685/300704 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 32065 event pairs, 970 based on Foata normal form. 16/5724 useless extension candidates. Maximal degree in co-relation 46116. Up to 4626 conditions per place. [2024-06-28 02:59:19,044 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 315 selfloop transitions, 184 changer transitions 0/507 dead transitions. [2024-06-28 02:59:19,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 507 transitions, 9038 flow [2024-06-28 02:59:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:59:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:59:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 02:59:19,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49127906976744184 [2024-06-28 02:59:19,045 INFO L175 Difference]: Start difference. First operand has 230 places, 469 transitions, 7606 flow. Second operand 8 states and 169 transitions. [2024-06-28 02:59:19,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 507 transitions, 9038 flow [2024-06-28 02:59:19,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 507 transitions, 8650 flow, removed 87 selfloop flow, removed 6 redundant places. [2024-06-28 02:59:19,528 INFO L231 Difference]: Finished difference. Result has 232 places, 469 transitions, 7608 flow [2024-06-28 02:59:19,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7218, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7608, PETRI_PLACES=232, PETRI_TRANSITIONS=469} [2024-06-28 02:59:19,528 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 188 predicate places. [2024-06-28 02:59:19,528 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 469 transitions, 7608 flow [2024-06-28 02:59:19,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:19,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:19,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:19,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:59:19,529 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:19,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:19,529 INFO L85 PathProgramCache]: Analyzing trace with hash -906712909, now seen corresponding path program 2 times [2024-06-28 02:59:19,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:19,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109161594] [2024-06-28 02:59:19,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:19,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:20,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:20,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109161594] [2024-06-28 02:59:20,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109161594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:20,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:20,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:59:20,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340707782] [2024-06-28 02:59:20,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:20,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:59:20,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:20,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:59:20,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:59:20,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:59:20,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 469 transitions, 7608 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:20,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:20,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:59:20,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:21,469 INFO L124 PetriNetUnfolderBase]: 4323/6522 cut-off events. [2024-06-28 02:59:21,470 INFO L125 PetriNetUnfolderBase]: For 348229/348236 co-relation queries the response was YES. [2024-06-28 02:59:21,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52066 conditions, 6522 events. 4323/6522 cut-off events. For 348229/348236 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 35054 event pairs, 1474 based on Foata normal form. 8/6522 useless extension candidates. Maximal degree in co-relation 51966. Up to 6155 conditions per place. [2024-06-28 02:59:21,534 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 409 selfloop transitions, 23 changer transitions 0/486 dead transitions. [2024-06-28 02:59:21,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 486 transitions, 8661 flow [2024-06-28 02:59:21,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:59:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:59:21,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 02:59:21,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-06-28 02:59:21,535 INFO L175 Difference]: Start difference. First operand has 232 places, 469 transitions, 7608 flow. Second operand 6 states and 111 transitions. [2024-06-28 02:59:21,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 486 transitions, 8661 flow [2024-06-28 02:59:21,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 486 transitions, 8109 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:21,979 INFO L231 Difference]: Finished difference. Result has 230 places, 472 transitions, 7159 flow [2024-06-28 02:59:21,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7058, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7159, PETRI_PLACES=230, PETRI_TRANSITIONS=472} [2024-06-28 02:59:21,980 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 186 predicate places. [2024-06-28 02:59:21,980 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 472 transitions, 7159 flow [2024-06-28 02:59:21,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:21,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:21,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:21,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:59:21,980 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:21,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:21,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1283922505, now seen corresponding path program 7 times [2024-06-28 02:59:21,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:21,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008156269] [2024-06-28 02:59:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:21,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:22,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:22,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008156269] [2024-06-28 02:59:22,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008156269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:22,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:22,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:59:22,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840288323] [2024-06-28 02:59:22,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:22,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:59:22,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:22,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:59:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:59:22,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:22,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 472 transitions, 7159 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:22,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:22,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:22,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:23,909 INFO L124 PetriNetUnfolderBase]: 3783/5823 cut-off events. [2024-06-28 02:59:23,909 INFO L125 PetriNetUnfolderBase]: For 312627/312642 co-relation queries the response was YES. [2024-06-28 02:59:23,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46725 conditions, 5823 events. 3783/5823 cut-off events. For 312627/312642 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 32712 event pairs, 1289 based on Foata normal form. 10/5806 useless extension candidates. Maximal degree in co-relation 46625. Up to 5433 conditions per place. [2024-06-28 02:59:23,963 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 470 selfloop transitions, 32 changer transitions 0/511 dead transitions. [2024-06-28 02:59:23,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 511 transitions, 8579 flow [2024-06-28 02:59:23,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:59:23,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:59:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 02:59:23,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-28 02:59:23,964 INFO L175 Difference]: Start difference. First operand has 230 places, 472 transitions, 7159 flow. Second operand 8 states and 151 transitions. [2024-06-28 02:59:23,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 511 transitions, 8579 flow [2024-06-28 02:59:24,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 511 transitions, 8502 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 02:59:24,354 INFO L231 Difference]: Finished difference. Result has 233 places, 483 transitions, 7413 flow [2024-06-28 02:59:24,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7082, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7413, PETRI_PLACES=233, PETRI_TRANSITIONS=483} [2024-06-28 02:59:24,355 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 189 predicate places. [2024-06-28 02:59:24,355 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 483 transitions, 7413 flow [2024-06-28 02:59:24,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:24,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:24,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:24,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:59:24,355 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:24,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:24,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1420692657, now seen corresponding path program 1 times [2024-06-28 02:59:24,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:24,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486208610] [2024-06-28 02:59:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:24,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:25,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:25,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486208610] [2024-06-28 02:59:25,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486208610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:25,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:25,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:59:25,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577687375] [2024-06-28 02:59:25,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:25,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:59:25,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:25,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:59:25,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:59:25,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:59:25,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 483 transitions, 7413 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:25,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:25,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:59:25,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:26,338 INFO L124 PetriNetUnfolderBase]: 4445/6707 cut-off events. [2024-06-28 02:59:26,339 INFO L125 PetriNetUnfolderBase]: For 350474/350484 co-relation queries the response was YES. [2024-06-28 02:59:26,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52664 conditions, 6707 events. 4445/6707 cut-off events. For 350474/350484 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 36208 event pairs, 1644 based on Foata normal form. 13/6704 useless extension candidates. Maximal degree in co-relation 52564. Up to 6307 conditions per place. [2024-06-28 02:59:26,401 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 431 selfloop transitions, 31 changer transitions 0/516 dead transitions. [2024-06-28 02:59:26,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 516 transitions, 8672 flow [2024-06-28 02:59:26,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:59:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:59:26,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 02:59:26,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4011627906976744 [2024-06-28 02:59:26,405 INFO L175 Difference]: Start difference. First operand has 233 places, 483 transitions, 7413 flow. Second operand 8 states and 138 transitions. [2024-06-28 02:59:26,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 516 transitions, 8672 flow [2024-06-28 02:59:26,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 516 transitions, 8513 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-28 02:59:26,879 INFO L231 Difference]: Finished difference. Result has 238 places, 499 transitions, 7578 flow [2024-06-28 02:59:26,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7254, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7578, PETRI_PLACES=238, PETRI_TRANSITIONS=499} [2024-06-28 02:59:26,879 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 194 predicate places. [2024-06-28 02:59:26,879 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 499 transitions, 7578 flow [2024-06-28 02:59:26,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:26,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:26,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:26,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:59:26,880 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:26,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:26,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1919616269, now seen corresponding path program 8 times [2024-06-28 02:59:26,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:26,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525024107] [2024-06-28 02:59:26,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:26,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:27,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:27,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525024107] [2024-06-28 02:59:27,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525024107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:27,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:27,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:59:27,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574861752] [2024-06-28 02:59:27,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:27,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:59:27,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:27,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:59:27,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:59:27,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:27,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 499 transitions, 7578 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:27,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:27,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:27,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:28,954 INFO L124 PetriNetUnfolderBase]: 3878/5978 cut-off events. [2024-06-28 02:59:28,954 INFO L125 PetriNetUnfolderBase]: For 334516/334531 co-relation queries the response was YES. [2024-06-28 02:59:28,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48806 conditions, 5978 events. 3878/5978 cut-off events. For 334516/334531 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 33709 event pairs, 1289 based on Foata normal form. 10/5961 useless extension candidates. Maximal degree in co-relation 48702. Up to 5420 conditions per place. [2024-06-28 02:59:29,018 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 463 selfloop transitions, 71 changer transitions 0/544 dead transitions. [2024-06-28 02:59:29,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 544 transitions, 9297 flow [2024-06-28 02:59:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:59:29,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:59:29,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 02:59:29,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-28 02:59:29,020 INFO L175 Difference]: Start difference. First operand has 238 places, 499 transitions, 7578 flow. Second operand 8 states and 158 transitions. [2024-06-28 02:59:29,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 544 transitions, 9297 flow [2024-06-28 02:59:29,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 544 transitions, 9242 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 02:59:29,429 INFO L231 Difference]: Finished difference. Result has 243 places, 510 transitions, 7932 flow [2024-06-28 02:59:29,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7523, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7932, PETRI_PLACES=243, PETRI_TRANSITIONS=510} [2024-06-28 02:59:29,430 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 199 predicate places. [2024-06-28 02:59:29,430 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 510 transitions, 7932 flow [2024-06-28 02:59:29,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:29,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:29,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:29,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:59:29,430 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:29,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:29,431 INFO L85 PathProgramCache]: Analyzing trace with hash 2100198723, now seen corresponding path program 12 times [2024-06-28 02:59:29,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:29,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173684140] [2024-06-28 02:59:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:29,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:30,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:30,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173684140] [2024-06-28 02:59:30,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173684140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:30,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:30,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:59:30,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876022088] [2024-06-28 02:59:30,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:30,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:59:30,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:30,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:59:30,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:59:30,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:30,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 510 transitions, 7932 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:30,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:30,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:30,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:31,738 INFO L124 PetriNetUnfolderBase]: 3864/5955 cut-off events. [2024-06-28 02:59:31,738 INFO L125 PetriNetUnfolderBase]: For 341599/341614 co-relation queries the response was YES. [2024-06-28 02:59:31,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48959 conditions, 5955 events. 3864/5955 cut-off events. For 341599/341614 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 33574 event pairs, 1303 based on Foata normal form. 7/5934 useless extension candidates. Maximal degree in co-relation 48853. Up to 5578 conditions per place. [2024-06-28 02:59:31,791 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 484 selfloop transitions, 38 changer transitions 0/532 dead transitions. [2024-06-28 02:59:31,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 532 transitions, 9111 flow [2024-06-28 02:59:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:59:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:59:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 02:59:31,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-28 02:59:31,793 INFO L175 Difference]: Start difference. First operand has 243 places, 510 transitions, 7932 flow. Second operand 8 states and 149 transitions. [2024-06-28 02:59:31,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 532 transitions, 9111 flow [2024-06-28 02:59:32,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 532 transitions, 8670 flow, removed 127 selfloop flow, removed 6 redundant places. [2024-06-28 02:59:32,267 INFO L231 Difference]: Finished difference. Result has 245 places, 510 transitions, 7586 flow [2024-06-28 02:59:32,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7491, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7586, PETRI_PLACES=245, PETRI_TRANSITIONS=510} [2024-06-28 02:59:32,268 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 201 predicate places. [2024-06-28 02:59:32,268 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 510 transitions, 7586 flow [2024-06-28 02:59:32,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:32,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:32,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:32,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:59:32,269 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:32,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:32,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2100198909, now seen corresponding path program 9 times [2024-06-28 02:59:32,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:32,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688086589] [2024-06-28 02:59:32,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:32,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:33,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:33,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:33,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688086589] [2024-06-28 02:59:33,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688086589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:33,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:33,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:59:33,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135780979] [2024-06-28 02:59:33,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:33,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:59:33,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:33,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:59:33,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:59:33,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:33,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 510 transitions, 7586 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:33,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:33,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:33,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:34,231 INFO L124 PetriNetUnfolderBase]: 3842/5927 cut-off events. [2024-06-28 02:59:34,231 INFO L125 PetriNetUnfolderBase]: For 344784/344799 co-relation queries the response was YES. [2024-06-28 02:59:34,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48164 conditions, 5927 events. 3842/5927 cut-off events. For 344784/344799 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 33369 event pairs, 1273 based on Foata normal form. 10/5910 useless extension candidates. Maximal degree in co-relation 48057. Up to 5383 conditions per place. [2024-06-28 02:59:34,297 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 460 selfloop transitions, 73 changer transitions 0/543 dead transitions. [2024-06-28 02:59:34,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 543 transitions, 8915 flow [2024-06-28 02:59:34,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:59:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:59:34,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 02:59:34,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058139534883723 [2024-06-28 02:59:34,298 INFO L175 Difference]: Start difference. First operand has 245 places, 510 transitions, 7586 flow. Second operand 8 states and 155 transitions. [2024-06-28 02:59:34,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 543 transitions, 8915 flow [2024-06-28 02:59:34,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 543 transitions, 8607 flow, removed 89 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:34,782 INFO L231 Difference]: Finished difference. Result has 246 places, 510 transitions, 7442 flow [2024-06-28 02:59:34,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7278, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7442, PETRI_PLACES=246, PETRI_TRANSITIONS=510} [2024-06-28 02:59:34,782 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 202 predicate places. [2024-06-28 02:59:34,782 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 510 transitions, 7442 flow [2024-06-28 02:59:34,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:34,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:34,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:34,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:59:34,783 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:34,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:34,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1892595837, now seen corresponding path program 3 times [2024-06-28 02:59:34,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:34,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140417992] [2024-06-28 02:59:34,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:34,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:35,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:35,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140417992] [2024-06-28 02:59:35,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140417992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:35,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:35,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:59:35,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893911182] [2024-06-28 02:59:35,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:35,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:59:35,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:35,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:59:35,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:59:35,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:59:35,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 510 transitions, 7442 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:35,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:35,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:59:35,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:36,648 INFO L124 PetriNetUnfolderBase]: 4465/6741 cut-off events. [2024-06-28 02:59:36,649 INFO L125 PetriNetUnfolderBase]: For 386961/386972 co-relation queries the response was YES. [2024-06-28 02:59:36,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53447 conditions, 6741 events. 4465/6741 cut-off events. For 386961/386972 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 36507 event pairs, 1642 based on Foata normal form. 12/6735 useless extension candidates. Maximal degree in co-relation 53339. Up to 6396 conditions per place. [2024-06-28 02:59:36,723 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 452 selfloop transitions, 12 changer transitions 0/518 dead transitions. [2024-06-28 02:59:36,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 518 transitions, 8404 flow [2024-06-28 02:59:36,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:59:36,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:59:36,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-28 02:59:36,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953488372093023 [2024-06-28 02:59:36,724 INFO L175 Difference]: Start difference. First operand has 246 places, 510 transitions, 7442 flow. Second operand 6 states and 102 transitions. [2024-06-28 02:59:36,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 518 transitions, 8404 flow [2024-06-28 02:59:37,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 518 transitions, 8089 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:37,266 INFO L231 Difference]: Finished difference. Result has 243 places, 510 transitions, 7157 flow [2024-06-28 02:59:37,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7127, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7157, PETRI_PLACES=243, PETRI_TRANSITIONS=510} [2024-06-28 02:59:37,266 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 199 predicate places. [2024-06-28 02:59:37,266 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 510 transitions, 7157 flow [2024-06-28 02:59:37,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:37,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:37,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:37,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:59:37,267 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:37,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:37,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1884983229, now seen corresponding path program 1 times [2024-06-28 02:59:37,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:37,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431740431] [2024-06-28 02:59:37,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:37,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:37,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:37,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431740431] [2024-06-28 02:59:37,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431740431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:37,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:37,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:59:37,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267472980] [2024-06-28 02:59:37,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:37,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:59:37,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:37,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:59:37,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:59:37,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:59:37,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 510 transitions, 7157 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:37,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:37,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:59:37,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:39,210 INFO L124 PetriNetUnfolderBase]: 4470/6748 cut-off events. [2024-06-28 02:59:39,211 INFO L125 PetriNetUnfolderBase]: For 381315/381326 co-relation queries the response was YES. [2024-06-28 02:59:39,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52690 conditions, 6748 events. 4470/6748 cut-off events. For 381315/381326 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 36557 event pairs, 1642 based on Foata normal form. 12/6742 useless extension candidates. Maximal degree in co-relation 52582. Up to 6390 conditions per place. [2024-06-28 02:59:39,284 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 457 selfloop transitions, 17 changer transitions 0/528 dead transitions. [2024-06-28 02:59:39,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 528 transitions, 8315 flow [2024-06-28 02:59:39,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:59:39,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:59:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-28 02:59:39,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2024-06-28 02:59:39,285 INFO L175 Difference]: Start difference. First operand has 243 places, 510 transitions, 7157 flow. Second operand 6 states and 108 transitions. [2024-06-28 02:59:39,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 528 transitions, 8315 flow [2024-06-28 02:59:39,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 528 transitions, 8273 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:59:39,813 INFO L231 Difference]: Finished difference. Result has 244 places, 516 transitions, 7225 flow [2024-06-28 02:59:39,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7115, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7225, PETRI_PLACES=244, PETRI_TRANSITIONS=516} [2024-06-28 02:59:39,813 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 200 predicate places. [2024-06-28 02:59:39,814 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 516 transitions, 7225 flow [2024-06-28 02:59:39,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:39,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:39,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:39,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:59:39,814 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:39,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:39,815 INFO L85 PathProgramCache]: Analyzing trace with hash -857106337, now seen corresponding path program 2 times [2024-06-28 02:59:39,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:39,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591411326] [2024-06-28 02:59:39,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:39,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:40,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:40,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591411326] [2024-06-28 02:59:40,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591411326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:40,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:40,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:59:40,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970638747] [2024-06-28 02:59:40,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:40,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:59:40,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:40,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:59:40,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:59:40,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:59:40,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 516 transitions, 7225 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:40,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:40,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:59:40,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:41,833 INFO L124 PetriNetUnfolderBase]: 4467/6744 cut-off events. [2024-06-28 02:59:41,833 INFO L125 PetriNetUnfolderBase]: For 395656/395670 co-relation queries the response was YES. [2024-06-28 02:59:41,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53332 conditions, 6744 events. 4467/6744 cut-off events. For 395656/395670 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 36595 event pairs, 1645 based on Foata normal form. 14/6739 useless extension candidates. Maximal degree in co-relation 53223. Up to 6387 conditions per place. [2024-06-28 02:59:41,902 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 453 selfloop transitions, 17 changer transitions 0/524 dead transitions. [2024-06-28 02:59:41,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 524 transitions, 8199 flow [2024-06-28 02:59:41,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:59:41,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:59:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 02:59:41,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40310077519379844 [2024-06-28 02:59:41,903 INFO L175 Difference]: Start difference. First operand has 244 places, 516 transitions, 7225 flow. Second operand 6 states and 104 transitions. [2024-06-28 02:59:41,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 524 transitions, 8199 flow [2024-06-28 02:59:42,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 524 transitions, 8144 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-28 02:59:42,505 INFO L231 Difference]: Finished difference. Result has 248 places, 516 transitions, 7210 flow [2024-06-28 02:59:42,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7170, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7210, PETRI_PLACES=248, PETRI_TRANSITIONS=516} [2024-06-28 02:59:42,505 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 204 predicate places. [2024-06-28 02:59:42,505 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 516 transitions, 7210 flow [2024-06-28 02:59:42,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:42,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:42,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:42,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:59:42,506 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:42,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:42,506 INFO L85 PathProgramCache]: Analyzing trace with hash 2108787459, now seen corresponding path program 1 times [2024-06-28 02:59:42,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:42,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424680894] [2024-06-28 02:59:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:42,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:43,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:43,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424680894] [2024-06-28 02:59:43,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424680894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:43,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:43,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:43,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109702885] [2024-06-28 02:59:43,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:43,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:43,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:43,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:43,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:43,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 02:59:43,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 516 transitions, 7210 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:43,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:43,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 02:59:43,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:45,199 INFO L124 PetriNetUnfolderBase]: 4482/6750 cut-off events. [2024-06-28 02:59:45,199 INFO L125 PetriNetUnfolderBase]: For 419363/419375 co-relation queries the response was YES. [2024-06-28 02:59:45,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54236 conditions, 6750 events. 4482/6750 cut-off events. For 419363/419375 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 36447 event pairs, 1571 based on Foata normal form. 4/6723 useless extension candidates. Maximal degree in co-relation 54125. Up to 6460 conditions per place. [2024-06-28 02:59:45,274 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 515 selfloop transitions, 22 changer transitions 0/548 dead transitions. [2024-06-28 02:59:45,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 548 transitions, 8502 flow [2024-06-28 02:59:45,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:45,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:45,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 02:59:45,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082687338501292 [2024-06-28 02:59:45,276 INFO L175 Difference]: Start difference. First operand has 248 places, 516 transitions, 7210 flow. Second operand 9 states and 158 transitions. [2024-06-28 02:59:45,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 548 transitions, 8502 flow [2024-06-28 02:59:45,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 548 transitions, 8449 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:59:45,784 INFO L231 Difference]: Finished difference. Result has 252 places, 521 transitions, 7284 flow [2024-06-28 02:59:45,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7157, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7284, PETRI_PLACES=252, PETRI_TRANSITIONS=521} [2024-06-28 02:59:45,784 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 208 predicate places. [2024-06-28 02:59:45,784 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 521 transitions, 7284 flow [2024-06-28 02:59:45,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:45,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:45,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:45,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:59:45,785 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:45,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1400130173, now seen corresponding path program 1 times [2024-06-28 02:59:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:45,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237356977] [2024-06-28 02:59:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:45,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:46,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:46,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:46,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237356977] [2024-06-28 02:59:46,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237356977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:46,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:46,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:46,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980920751] [2024-06-28 02:59:46,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:46,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:46,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:46,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:46,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:46,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:46,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 521 transitions, 7284 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:46,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:46,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:46,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:48,119 INFO L124 PetriNetUnfolderBase]: 4122/6322 cut-off events. [2024-06-28 02:59:48,120 INFO L125 PetriNetUnfolderBase]: For 426006/426044 co-relation queries the response was YES. [2024-06-28 02:59:48,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52369 conditions, 6322 events. 4122/6322 cut-off events. For 426006/426044 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 35418 event pairs, 811 based on Foata normal form. 24/6312 useless extension candidates. Maximal degree in co-relation 52257. Up to 4579 conditions per place. [2024-06-28 02:59:48,182 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 323 selfloop transitions, 233 changer transitions 0/569 dead transitions. [2024-06-28 02:59:48,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 569 transitions, 8976 flow [2024-06-28 02:59:48,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:48,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:48,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-28 02:59:48,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720930232558139 [2024-06-28 02:59:48,183 INFO L175 Difference]: Start difference. First operand has 252 places, 521 transitions, 7284 flow. Second operand 10 states and 203 transitions. [2024-06-28 02:59:48,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 569 transitions, 8976 flow [2024-06-28 02:59:48,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 569 transitions, 8901 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 02:59:48,709 INFO L231 Difference]: Finished difference. Result has 257 places, 528 transitions, 7872 flow [2024-06-28 02:59:48,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7209, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7872, PETRI_PLACES=257, PETRI_TRANSITIONS=528} [2024-06-28 02:59:48,709 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 213 predicate places. [2024-06-28 02:59:48,709 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 528 transitions, 7872 flow [2024-06-28 02:59:48,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:48,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:48,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:48,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:59:48,710 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:48,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:48,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1819673727, now seen corresponding path program 2 times [2024-06-28 02:59:48,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:48,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902539181] [2024-06-28 02:59:48,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:48,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:49,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:49,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:49,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902539181] [2024-06-28 02:59:49,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902539181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:49,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:49,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:49,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283516683] [2024-06-28 02:59:49,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:49,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:49,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:49,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:49,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:49,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:49,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 528 transitions, 7872 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:49,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:49,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:49,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:50,934 INFO L124 PetriNetUnfolderBase]: 4315/6647 cut-off events. [2024-06-28 02:59:50,934 INFO L125 PetriNetUnfolderBase]: For 451248/451280 co-relation queries the response was YES. [2024-06-28 02:59:50,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56146 conditions, 6647 events. 4315/6647 cut-off events. For 451248/451280 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 37887 event pairs, 1036 based on Foata normal form. 26/6651 useless extension candidates. Maximal degree in co-relation 56032. Up to 5261 conditions per place. [2024-06-28 02:59:51,139 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 355 selfloop transitions, 252 changer transitions 0/620 dead transitions. [2024-06-28 02:59:51,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 620 transitions, 10378 flow [2024-06-28 02:59:51,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:51,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:51,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-28 02:59:51,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720930232558139 [2024-06-28 02:59:51,140 INFO L175 Difference]: Start difference. First operand has 257 places, 528 transitions, 7872 flow. Second operand 10 states and 203 transitions. [2024-06-28 02:59:51,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 620 transitions, 10378 flow [2024-06-28 02:59:51,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 620 transitions, 9930 flow, removed 97 selfloop flow, removed 5 redundant places. [2024-06-28 02:59:51,725 INFO L231 Difference]: Finished difference. Result has 265 places, 571 transitions, 8919 flow [2024-06-28 02:59:51,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7570, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8919, PETRI_PLACES=265, PETRI_TRANSITIONS=571} [2024-06-28 02:59:51,725 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 221 predicate places. [2024-06-28 02:59:51,726 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 571 transitions, 8919 flow [2024-06-28 02:59:51,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:51,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:51,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:51,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:59:51,726 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:51,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:51,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2100730489, now seen corresponding path program 3 times [2024-06-28 02:59:51,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:51,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797153895] [2024-06-28 02:59:51,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:51,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:52,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:52,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797153895] [2024-06-28 02:59:52,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797153895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:52,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:52,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:52,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123180047] [2024-06-28 02:59:52,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:52,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:52,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:52,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:52,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:52,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:52,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 571 transitions, 8919 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:52,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:52,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:52,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:54,276 INFO L124 PetriNetUnfolderBase]: 4357/6707 cut-off events. [2024-06-28 02:59:54,276 INFO L125 PetriNetUnfolderBase]: For 468788/468820 co-relation queries the response was YES. [2024-06-28 02:59:54,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57882 conditions, 6707 events. 4357/6707 cut-off events. For 468788/468820 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 38175 event pairs, 1093 based on Foata normal form. 26/6711 useless extension candidates. Maximal degree in co-relation 57763. Up to 5640 conditions per place. [2024-06-28 02:59:54,357 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 371 selfloop transitions, 237 changer transitions 0/621 dead transitions. [2024-06-28 02:59:54,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 621 transitions, 10579 flow [2024-06-28 02:59:54,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:54,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-28 02:59:54,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604651162790698 [2024-06-28 02:59:54,358 INFO L175 Difference]: Start difference. First operand has 265 places, 571 transitions, 8919 flow. Second operand 10 states and 198 transitions. [2024-06-28 02:59:54,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 621 transitions, 10579 flow [2024-06-28 02:59:55,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 621 transitions, 10415 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 02:59:55,048 INFO L231 Difference]: Finished difference. Result has 273 places, 583 transitions, 9534 flow [2024-06-28 02:59:55,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8755, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9534, PETRI_PLACES=273, PETRI_TRANSITIONS=583} [2024-06-28 02:59:55,048 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 229 predicate places. [2024-06-28 02:59:55,049 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 583 transitions, 9534 flow [2024-06-28 02:59:55,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:55,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:55,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:55,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:59:55,049 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:55,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:55,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1821547677, now seen corresponding path program 4 times [2024-06-28 02:59:55,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:55,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951145213] [2024-06-28 02:59:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:55,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:55,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951145213] [2024-06-28 02:59:55,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951145213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:55,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:55,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:55,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128787513] [2024-06-28 02:59:55,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:55,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:55,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:55,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:55,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:55,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:55,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 583 transitions, 9534 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:55,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:55,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:55,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:57,465 INFO L124 PetriNetUnfolderBase]: 4371/6731 cut-off events. [2024-06-28 02:59:57,465 INFO L125 PetriNetUnfolderBase]: For 483577/483609 co-relation queries the response was YES. [2024-06-28 02:59:57,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59141 conditions, 6731 events. 4371/6731 cut-off events. For 483577/483609 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 38384 event pairs, 1077 based on Foata normal form. 26/6735 useless extension candidates. Maximal degree in co-relation 59018. Up to 5585 conditions per place. [2024-06-28 02:59:57,551 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 369 selfloop transitions, 245 changer transitions 0/627 dead transitions. [2024-06-28 02:59:57,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 627 transitions, 11074 flow [2024-06-28 02:59:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:57,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-28 02:59:57,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 02:59:57,553 INFO L175 Difference]: Start difference. First operand has 273 places, 583 transitions, 9534 flow. Second operand 10 states and 200 transitions. [2024-06-28 02:59:57,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 627 transitions, 11074 flow [2024-06-28 02:59:58,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 627 transitions, 10524 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:58,306 INFO L231 Difference]: Finished difference. Result has 277 places, 587 transitions, 9603 flow [2024-06-28 02:59:58,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9002, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9603, PETRI_PLACES=277, PETRI_TRANSITIONS=587} [2024-06-28 02:59:58,307 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 233 predicate places. [2024-06-28 02:59:58,307 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 587 transitions, 9603 flow [2024-06-28 02:59:58,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:58,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:58,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:58,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:59:58,308 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:58,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:58,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1385948615, now seen corresponding path program 5 times [2024-06-28 02:59:58,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:58,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806589733] [2024-06-28 02:59:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:58,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:59,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:59,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806589733] [2024-06-28 02:59:59,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806589733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:59,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:59,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:59,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029029776] [2024-06-28 02:59:59,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:59,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:59,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:59,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:59,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:59,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:59,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 587 transitions, 9603 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:59,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:59,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:59,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:00,848 INFO L124 PetriNetUnfolderBase]: 4500/6940 cut-off events. [2024-06-28 03:00:00,849 INFO L125 PetriNetUnfolderBase]: For 511022/511044 co-relation queries the response was YES. [2024-06-28 03:00:00,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60990 conditions, 6940 events. 4500/6940 cut-off events. For 511022/511044 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 39905 event pairs, 1163 based on Foata normal form. 18/6937 useless extension candidates. Maximal degree in co-relation 60865. Up to 5546 conditions per place. [2024-06-28 03:00:00,931 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 421 selfloop transitions, 210 changer transitions 0/644 dead transitions. [2024-06-28 03:00:00,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 644 transitions, 11471 flow [2024-06-28 03:00:00,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:00,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-28 03:00:00,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697674418604651 [2024-06-28 03:00:00,932 INFO L175 Difference]: Start difference. First operand has 277 places, 587 transitions, 9603 flow. Second operand 10 states and 202 transitions. [2024-06-28 03:00:00,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 644 transitions, 11471 flow [2024-06-28 03:00:01,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 644 transitions, 10932 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 03:00:01,694 INFO L231 Difference]: Finished difference. Result has 281 places, 605 transitions, 9849 flow [2024-06-28 03:00:01,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9090, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9849, PETRI_PLACES=281, PETRI_TRANSITIONS=605} [2024-06-28 03:00:01,695 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 237 predicate places. [2024-06-28 03:00:01,695 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 605 transitions, 9849 flow [2024-06-28 03:00:01,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:01,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:01,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:01,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:00:01,695 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:01,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:01,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1387822565, now seen corresponding path program 6 times [2024-06-28 03:00:01,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:01,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901685405] [2024-06-28 03:00:01,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:01,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:02,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:02,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:02,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901685405] [2024-06-28 03:00:02,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901685405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:02,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:02,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:02,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933857106] [2024-06-28 03:00:02,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:02,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:02,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:02,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:02,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:02,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:02,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 605 transitions, 9849 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:02,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:02,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:02,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:04,415 INFO L124 PetriNetUnfolderBase]: 4596/7095 cut-off events. [2024-06-28 03:00:04,416 INFO L125 PetriNetUnfolderBase]: For 543576/543598 co-relation queries the response was YES. [2024-06-28 03:00:04,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62910 conditions, 7095 events. 4596/7095 cut-off events. For 543576/543598 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 41046 event pairs, 1201 based on Foata normal form. 20/7094 useless extension candidates. Maximal degree in co-relation 62783. Up to 5957 conditions per place. [2024-06-28 03:00:04,501 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 437 selfloop transitions, 208 changer transitions 0/658 dead transitions. [2024-06-28 03:00:04,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 658 transitions, 11744 flow [2024-06-28 03:00:04,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:04,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-28 03:00:04,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 03:00:04,502 INFO L175 Difference]: Start difference. First operand has 281 places, 605 transitions, 9849 flow. Second operand 11 states and 220 transitions. [2024-06-28 03:00:04,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 658 transitions, 11744 flow [2024-06-28 03:00:05,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 658 transitions, 11502 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:00:05,377 INFO L231 Difference]: Finished difference. Result has 286 places, 617 transitions, 10296 flow [2024-06-28 03:00:05,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9607, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10296, PETRI_PLACES=286, PETRI_TRANSITIONS=617} [2024-06-28 03:00:05,377 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 242 predicate places. [2024-06-28 03:00:05,378 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 617 transitions, 10296 flow [2024-06-28 03:00:05,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:05,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:05,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:05,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:00:05,378 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:05,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:05,378 INFO L85 PathProgramCache]: Analyzing trace with hash -512446727, now seen corresponding path program 7 times [2024-06-28 03:00:05,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:05,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916425868] [2024-06-28 03:00:05,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:05,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:06,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:06,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916425868] [2024-06-28 03:00:06,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916425868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:06,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:06,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:06,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563664812] [2024-06-28 03:00:06,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:06,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:06,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:06,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:06,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:06,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:06,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 617 transitions, 10296 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:06,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:06,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:06,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:08,140 INFO L124 PetriNetUnfolderBase]: 4635/7166 cut-off events. [2024-06-28 03:00:08,141 INFO L125 PetriNetUnfolderBase]: For 565269/565291 co-relation queries the response was YES. [2024-06-28 03:00:08,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64467 conditions, 7166 events. 4635/7166 cut-off events. For 565269/565291 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 41691 event pairs, 1251 based on Foata normal form. 20/7165 useless extension candidates. Maximal degree in co-relation 64338. Up to 6210 conditions per place. [2024-06-28 03:00:08,222 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 459 selfloop transitions, 184 changer transitions 0/656 dead transitions. [2024-06-28 03:00:08,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 656 transitions, 11849 flow [2024-06-28 03:00:08,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:08,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 03:00:08,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-28 03:00:08,223 INFO L175 Difference]: Start difference. First operand has 286 places, 617 transitions, 10296 flow. Second operand 10 states and 197 transitions. [2024-06-28 03:00:08,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 656 transitions, 11849 flow [2024-06-28 03:00:09,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 656 transitions, 11682 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 03:00:09,094 INFO L231 Difference]: Finished difference. Result has 291 places, 623 transitions, 10658 flow [2024-06-28 03:00:09,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10129, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10658, PETRI_PLACES=291, PETRI_TRANSITIONS=623} [2024-06-28 03:00:09,094 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 247 predicate places. [2024-06-28 03:00:09,094 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 623 transitions, 10658 flow [2024-06-28 03:00:09,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:09,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:09,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:09,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:00:09,095 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:09,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:09,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1757259210, now seen corresponding path program 3 times [2024-06-28 03:00:09,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:09,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246281536] [2024-06-28 03:00:09,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:09,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:10,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:10,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246281536] [2024-06-28 03:00:10,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246281536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:10,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:10,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:10,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585096422] [2024-06-28 03:00:10,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:10,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:10,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:10,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:10,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:10,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:10,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 623 transitions, 10658 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:10,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:10,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:10,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:12,121 INFO L124 PetriNetUnfolderBase]: 4657/7182 cut-off events. [2024-06-28 03:00:12,121 INFO L125 PetriNetUnfolderBase]: For 578509/578531 co-relation queries the response was YES. [2024-06-28 03:00:12,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65553 conditions, 7182 events. 4657/7182 cut-off events. For 578509/578531 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 41591 event pairs, 1287 based on Foata normal form. 16/7182 useless extension candidates. Maximal degree in co-relation 65422. Up to 6044 conditions per place. [2024-06-28 03:00:12,208 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 488 selfloop transitions, 164 changer transitions 0/665 dead transitions. [2024-06-28 03:00:12,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 665 transitions, 12215 flow [2024-06-28 03:00:12,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:12,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:12,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-28 03:00:12,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720930232558139 [2024-06-28 03:00:12,210 INFO L175 Difference]: Start difference. First operand has 291 places, 623 transitions, 10658 flow. Second operand 10 states and 203 transitions. [2024-06-28 03:00:12,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 665 transitions, 12215 flow [2024-06-28 03:00:13,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 665 transitions, 11812 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 03:00:13,073 INFO L231 Difference]: Finished difference. Result has 294 places, 626 transitions, 10638 flow [2024-06-28 03:00:13,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10255, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10638, PETRI_PLACES=294, PETRI_TRANSITIONS=626} [2024-06-28 03:00:13,073 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 250 predicate places. [2024-06-28 03:00:13,073 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 626 transitions, 10638 flow [2024-06-28 03:00:13,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:13,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:13,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:13,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:00:13,074 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:13,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:13,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1474662245, now seen corresponding path program 8 times [2024-06-28 03:00:13,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:13,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729737740] [2024-06-28 03:00:13,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:13,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:14,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:14,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729737740] [2024-06-28 03:00:14,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729737740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:14,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:14,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:14,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269902579] [2024-06-28 03:00:14,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:14,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:14,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:14,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:14,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:14,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:14,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 626 transitions, 10638 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:14,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:14,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:14,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:16,132 INFO L124 PetriNetUnfolderBase]: 4696/7248 cut-off events. [2024-06-28 03:00:16,132 INFO L125 PetriNetUnfolderBase]: For 604669/604691 co-relation queries the response was YES. [2024-06-28 03:00:16,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66472 conditions, 7248 events. 4696/7248 cut-off events. For 604669/604691 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 42153 event pairs, 1267 based on Foata normal form. 20/7247 useless extension candidates. Maximal degree in co-relation 66340. Up to 6510 conditions per place. [2024-06-28 03:00:16,212 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 546 selfloop transitions, 106 changer transitions 0/665 dead transitions. [2024-06-28 03:00:16,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 665 transitions, 12235 flow [2024-06-28 03:00:16,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:16,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:16,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:00:16,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-28 03:00:16,214 INFO L175 Difference]: Start difference. First operand has 294 places, 626 transitions, 10638 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:00:16,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 665 transitions, 12235 flow [2024-06-28 03:00:17,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 665 transitions, 11885 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:17,325 INFO L231 Difference]: Finished difference. Result has 296 places, 632 transitions, 10670 flow [2024-06-28 03:00:17,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10288, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10670, PETRI_PLACES=296, PETRI_TRANSITIONS=632} [2024-06-28 03:00:17,326 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 252 predicate places. [2024-06-28 03:00:17,326 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 632 transitions, 10670 flow [2024-06-28 03:00:17,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:17,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:17,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:17,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:00:17,326 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:17,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:17,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1474662400, now seen corresponding path program 4 times [2024-06-28 03:00:17,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:17,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461337651] [2024-06-28 03:00:17,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:17,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:18,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:18,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461337651] [2024-06-28 03:00:18,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461337651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:18,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:18,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:18,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28543141] [2024-06-28 03:00:18,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:18,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:18,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:18,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:18,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:18,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:18,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 632 transitions, 10670 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:18,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:18,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:18,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:20,475 INFO L124 PetriNetUnfolderBase]: 4718/7284 cut-off events. [2024-06-28 03:00:20,475 INFO L125 PetriNetUnfolderBase]: For 618153/618175 co-relation queries the response was YES. [2024-06-28 03:00:20,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66712 conditions, 7284 events. 4718/7284 cut-off events. For 618153/618175 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 42437 event pairs, 1292 based on Foata normal form. 16/7284 useless extension candidates. Maximal degree in co-relation 66579. Up to 6105 conditions per place. [2024-06-28 03:00:20,566 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 492 selfloop transitions, 173 changer transitions 0/678 dead transitions. [2024-06-28 03:00:20,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 678 transitions, 12277 flow [2024-06-28 03:00:20,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:20,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:20,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-28 03:00:20,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 03:00:20,567 INFO L175 Difference]: Start difference. First operand has 296 places, 632 transitions, 10670 flow. Second operand 11 states and 220 transitions. [2024-06-28 03:00:20,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 678 transitions, 12277 flow [2024-06-28 03:00:21,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 678 transitions, 12006 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 03:00:21,629 INFO L231 Difference]: Finished difference. Result has 300 places, 635 transitions, 10811 flow [2024-06-28 03:00:21,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10399, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10811, PETRI_PLACES=300, PETRI_TRANSITIONS=635} [2024-06-28 03:00:21,630 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 256 predicate places. [2024-06-28 03:00:21,630 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 635 transitions, 10811 flow [2024-06-28 03:00:21,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:21,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:21,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:21,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:00:21,630 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:21,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:21,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1474518095, now seen corresponding path program 9 times [2024-06-28 03:00:21,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:21,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746152691] [2024-06-28 03:00:21,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:21,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:22,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:22,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746152691] [2024-06-28 03:00:22,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746152691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:22,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:22,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:22,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588203206] [2024-06-28 03:00:22,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:22,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:22,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:22,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:22,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:22,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:22,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 635 transitions, 10811 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:22,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:22,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:22,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:24,489 INFO L124 PetriNetUnfolderBase]: 4700/7261 cut-off events. [2024-06-28 03:00:24,489 INFO L125 PetriNetUnfolderBase]: For 632754/632776 co-relation queries the response was YES. [2024-06-28 03:00:24,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66691 conditions, 7261 events. 4700/7261 cut-off events. For 632754/632776 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 42293 event pairs, 1254 based on Foata normal form. 20/7260 useless extension candidates. Maximal degree in co-relation 66557. Up to 6456 conditions per place. [2024-06-28 03:00:24,582 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 536 selfloop transitions, 123 changer transitions 0/672 dead transitions. [2024-06-28 03:00:24,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 672 transitions, 12294 flow [2024-06-28 03:00:24,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:24,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:24,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-28 03:00:24,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503171247357294 [2024-06-28 03:00:24,583 INFO L175 Difference]: Start difference. First operand has 300 places, 635 transitions, 10811 flow. Second operand 11 states and 213 transitions. [2024-06-28 03:00:24,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 672 transitions, 12294 flow [2024-06-28 03:00:25,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 672 transitions, 11869 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-28 03:00:25,732 INFO L231 Difference]: Finished difference. Result has 302 places, 635 transitions, 10652 flow [2024-06-28 03:00:25,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10386, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10652, PETRI_PLACES=302, PETRI_TRANSITIONS=635} [2024-06-28 03:00:25,732 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 258 predicate places. [2024-06-28 03:00:25,732 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 635 transitions, 10652 flow [2024-06-28 03:00:25,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:25,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:25,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:25,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:00:25,733 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:25,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:25,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1474518250, now seen corresponding path program 5 times [2024-06-28 03:00:25,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:25,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159941413] [2024-06-28 03:00:25,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:25,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:26,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:26,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159941413] [2024-06-28 03:00:26,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159941413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:26,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:26,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:26,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944195873] [2024-06-28 03:00:26,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:26,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:26,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:26,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:26,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:26,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:26,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 635 transitions, 10652 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:26,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:26,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:26,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:28,622 INFO L124 PetriNetUnfolderBase]: 4722/7300 cut-off events. [2024-06-28 03:00:28,623 INFO L125 PetriNetUnfolderBase]: For 624719/624741 co-relation queries the response was YES. [2024-06-28 03:00:28,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66465 conditions, 7300 events. 4722/7300 cut-off events. For 624719/624741 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 42660 event pairs, 1281 based on Foata normal form. 16/7300 useless extension candidates. Maximal degree in co-relation 66330. Up to 6065 conditions per place. [2024-06-28 03:00:28,730 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 485 selfloop transitions, 187 changer transitions 0/685 dead transitions. [2024-06-28 03:00:28,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 685 transitions, 12291 flow [2024-06-28 03:00:28,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:28,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:28,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 237 transitions. [2024-06-28 03:00:28,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-28 03:00:28,732 INFO L175 Difference]: Start difference. First operand has 302 places, 635 transitions, 10652 flow. Second operand 12 states and 237 transitions. [2024-06-28 03:00:28,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 685 transitions, 12291 flow [2024-06-28 03:00:29,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 685 transitions, 11893 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-28 03:00:29,958 INFO L231 Difference]: Finished difference. Result has 303 places, 638 transitions, 10699 flow [2024-06-28 03:00:29,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10254, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10699, PETRI_PLACES=303, PETRI_TRANSITIONS=638} [2024-06-28 03:00:29,958 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 259 predicate places. [2024-06-28 03:00:29,958 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 638 transitions, 10699 flow [2024-06-28 03:00:29,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:29,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:29,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:29,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:00:29,959 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:29,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:29,959 INFO L85 PathProgramCache]: Analyzing trace with hash 486922781, now seen corresponding path program 1 times [2024-06-28 03:00:29,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:29,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126805019] [2024-06-28 03:00:29,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:29,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:30,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:30,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126805019] [2024-06-28 03:00:30,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126805019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:30,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:30,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:00:30,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360633183] [2024-06-28 03:00:30,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:30,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:00:30,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:30,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:00:30,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:00:30,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:00:30,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 638 transitions, 10699 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:30,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:30,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:00:30,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:32,179 INFO L124 PetriNetUnfolderBase]: 5115/7768 cut-off events. [2024-06-28 03:00:32,179 INFO L125 PetriNetUnfolderBase]: For 636409/636424 co-relation queries the response was YES. [2024-06-28 03:00:32,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69345 conditions, 7768 events. 5115/7768 cut-off events. For 636409/636424 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 44007 event pairs, 1493 based on Foata normal form. 15/7771 useless extension candidates. Maximal degree in co-relation 69209. Up to 6964 conditions per place. [2024-06-28 03:00:32,276 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 520 selfloop transitions, 68 changer transitions 0/681 dead transitions. [2024-06-28 03:00:32,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 681 transitions, 12520 flow [2024-06-28 03:00:32,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:00:32,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:00:32,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 03:00:32,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058139534883723 [2024-06-28 03:00:32,277 INFO L175 Difference]: Start difference. First operand has 303 places, 638 transitions, 10699 flow. Second operand 8 states and 155 transitions. [2024-06-28 03:00:32,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 681 transitions, 12520 flow [2024-06-28 03:00:33,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 681 transitions, 12118 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 03:00:33,367 INFO L231 Difference]: Finished difference. Result has 305 places, 656 transitions, 10855 flow [2024-06-28 03:00:33,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10309, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10855, PETRI_PLACES=305, PETRI_TRANSITIONS=656} [2024-06-28 03:00:33,368 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 261 predicate places. [2024-06-28 03:00:33,368 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 656 transitions, 10855 flow [2024-06-28 03:00:33,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:33,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:33,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:33,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:00:33,368 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:33,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:33,368 INFO L85 PathProgramCache]: Analyzing trace with hash 777373021, now seen corresponding path program 10 times [2024-06-28 03:00:33,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:33,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044964931] [2024-06-28 03:00:33,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:33,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:34,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:34,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044964931] [2024-06-28 03:00:34,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044964931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:34,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:34,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:34,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562541871] [2024-06-28 03:00:34,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:34,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:34,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:34,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:34,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:34,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:34,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 656 transitions, 10855 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:34,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:34,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:34,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:36,362 INFO L124 PetriNetUnfolderBase]: 4880/7538 cut-off events. [2024-06-28 03:00:36,362 INFO L125 PetriNetUnfolderBase]: For 645588/645605 co-relation queries the response was YES. [2024-06-28 03:00:36,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69184 conditions, 7538 events. 4880/7538 cut-off events. For 645588/645605 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 44227 event pairs, 1250 based on Foata normal form. 14/7531 useless extension candidates. Maximal degree in co-relation 69044. Up to 6542 conditions per place. [2024-06-28 03:00:36,453 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 542 selfloop transitions, 153 changer transitions 0/711 dead transitions. [2024-06-28 03:00:36,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 711 transitions, 12933 flow [2024-06-28 03:00:36,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:36,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:36,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-28 03:00:36,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-06-28 03:00:36,455 INFO L175 Difference]: Start difference. First operand has 305 places, 656 transitions, 10855 flow. Second operand 10 states and 205 transitions. [2024-06-28 03:00:36,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 711 transitions, 12933 flow [2024-06-28 03:00:37,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 711 transitions, 12852 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-28 03:00:37,500 INFO L231 Difference]: Finished difference. Result has 314 places, 671 transitions, 11437 flow [2024-06-28 03:00:37,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10774, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11437, PETRI_PLACES=314, PETRI_TRANSITIONS=671} [2024-06-28 03:00:37,501 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 270 predicate places. [2024-06-28 03:00:37,501 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 671 transitions, 11437 flow [2024-06-28 03:00:37,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:37,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:37,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:37,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:00:37,501 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:37,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:37,502 INFO L85 PathProgramCache]: Analyzing trace with hash 777376896, now seen corresponding path program 6 times [2024-06-28 03:00:37,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:37,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173918059] [2024-06-28 03:00:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:37,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:38,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:38,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173918059] [2024-06-28 03:00:38,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173918059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:38,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:38,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:38,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50440946] [2024-06-28 03:00:38,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:38,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:38,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:38,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:38,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:38,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:38,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 671 transitions, 11437 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:38,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:38,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:38,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:40,518 INFO L124 PetriNetUnfolderBase]: 4921/7596 cut-off events. [2024-06-28 03:00:40,518 INFO L125 PetriNetUnfolderBase]: For 668042/668059 co-relation queries the response was YES. [2024-06-28 03:00:40,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70786 conditions, 7596 events. 4921/7596 cut-off events. For 668042/668059 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 44632 event pairs, 1256 based on Foata normal form. 10/7588 useless extension candidates. Maximal degree in co-relation 70643. Up to 6243 conditions per place. [2024-06-28 03:00:40,603 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 500 selfloop transitions, 206 changer transitions 0/722 dead transitions. [2024-06-28 03:00:40,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 722 transitions, 13405 flow [2024-06-28 03:00:40,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:40,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:40,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2024-06-28 03:00:40,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906976744186046 [2024-06-28 03:00:40,604 INFO L175 Difference]: Start difference. First operand has 314 places, 671 transitions, 11437 flow. Second operand 10 states and 211 transitions. [2024-06-28 03:00:40,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 722 transitions, 13405 flow [2024-06-28 03:00:41,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 722 transitions, 13156 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-28 03:00:41,712 INFO L231 Difference]: Finished difference. Result has 318 places, 677 transitions, 11709 flow [2024-06-28 03:00:41,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11188, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11709, PETRI_PLACES=318, PETRI_TRANSITIONS=677} [2024-06-28 03:00:41,713 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 274 predicate places. [2024-06-28 03:00:41,713 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 677 transitions, 11709 flow [2024-06-28 03:00:41,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:41,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:41,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:41,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:00:41,714 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:41,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:41,714 INFO L85 PathProgramCache]: Analyzing trace with hash 777376741, now seen corresponding path program 11 times [2024-06-28 03:00:41,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:41,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359932481] [2024-06-28 03:00:41,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:41,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:42,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:42,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:42,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359932481] [2024-06-28 03:00:42,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359932481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:42,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:42,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:42,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136074081] [2024-06-28 03:00:42,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:42,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:42,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:42,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:42,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:42,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:42,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 677 transitions, 11709 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:42,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:42,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:42,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:44,866 INFO L124 PetriNetUnfolderBase]: 4960/7665 cut-off events. [2024-06-28 03:00:44,866 INFO L125 PetriNetUnfolderBase]: For 696869/696886 co-relation queries the response was YES. [2024-06-28 03:00:44,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72302 conditions, 7665 events. 4960/7665 cut-off events. For 696869/696886 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 45262 event pairs, 1284 based on Foata normal form. 14/7658 useless extension candidates. Maximal degree in co-relation 72157. Up to 6811 conditions per place. [2024-06-28 03:00:44,976 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 564 selfloop transitions, 142 changer transitions 0/722 dead transitions. [2024-06-28 03:00:44,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 722 transitions, 13442 flow [2024-06-28 03:00:44,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:44,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-28 03:00:44,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4587737843551797 [2024-06-28 03:00:44,977 INFO L175 Difference]: Start difference. First operand has 318 places, 677 transitions, 11709 flow. Second operand 11 states and 217 transitions. [2024-06-28 03:00:44,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 722 transitions, 13442 flow [2024-06-28 03:00:46,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 722 transitions, 13201 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 03:00:46,398 INFO L231 Difference]: Finished difference. Result has 324 places, 683 transitions, 11918 flow [2024-06-28 03:00:46,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11468, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11918, PETRI_PLACES=324, PETRI_TRANSITIONS=683} [2024-06-28 03:00:46,399 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 280 predicate places. [2024-06-28 03:00:46,399 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 683 transitions, 11918 flow [2024-06-28 03:00:46,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:46,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:46,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:46,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:00:46,400 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:46,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:46,400 INFO L85 PathProgramCache]: Analyzing trace with hash 782889006, now seen corresponding path program 7 times [2024-06-28 03:00:46,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:46,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320295150] [2024-06-28 03:00:46,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:46,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:47,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:47,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320295150] [2024-06-28 03:00:47,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320295150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:47,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:47,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:47,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763289664] [2024-06-28 03:00:47,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:47,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:47,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:47,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:47,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:47,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:47,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 683 transitions, 11918 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:47,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:47,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:47,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:49,568 INFO L124 PetriNetUnfolderBase]: 4983/7689 cut-off events. [2024-06-28 03:00:49,568 INFO L125 PetriNetUnfolderBase]: For 711007/711029 co-relation queries the response was YES. [2024-06-28 03:00:49,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73251 conditions, 7689 events. 4983/7689 cut-off events. For 711007/711029 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 45291 event pairs, 1265 based on Foata normal form. 16/7689 useless extension candidates. Maximal degree in co-relation 73104. Up to 6511 conditions per place. [2024-06-28 03:00:49,676 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 540 selfloop transitions, 171 changer transitions 0/727 dead transitions. [2024-06-28 03:00:49,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 727 transitions, 13629 flow [2024-06-28 03:00:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:49,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-28 03:00:49,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-06-28 03:00:49,678 INFO L175 Difference]: Start difference. First operand has 324 places, 683 transitions, 11918 flow. Second operand 10 states and 205 transitions. [2024-06-28 03:00:49,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 727 transitions, 13629 flow [2024-06-28 03:00:50,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 727 transitions, 13341 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:50,924 INFO L231 Difference]: Finished difference. Result has 326 places, 686 transitions, 12039 flow [2024-06-28 03:00:50,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11630, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12039, PETRI_PLACES=326, PETRI_TRANSITIONS=686} [2024-06-28 03:00:50,925 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 282 predicate places. [2024-06-28 03:00:50,925 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 686 transitions, 12039 flow [2024-06-28 03:00:50,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:50,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:50,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:50,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:00:50,926 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:50,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:50,926 INFO L85 PathProgramCache]: Analyzing trace with hash 777526626, now seen corresponding path program 8 times [2024-06-28 03:00:50,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:50,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436228618] [2024-06-28 03:00:50,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:50,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:51,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:51,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436228618] [2024-06-28 03:00:51,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436228618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:51,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:51,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:51,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667230074] [2024-06-28 03:00:51,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:51,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:51,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:51,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:51,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:52,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:52,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 686 transitions, 12039 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:52,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:52,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:52,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:54,126 INFO L124 PetriNetUnfolderBase]: 5046/7786 cut-off events. [2024-06-28 03:00:54,126 INFO L125 PetriNetUnfolderBase]: For 736870/736887 co-relation queries the response was YES. [2024-06-28 03:00:54,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74540 conditions, 7786 events. 5046/7786 cut-off events. For 736870/736887 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 45960 event pairs, 1242 based on Foata normal form. 10/7778 useless extension candidates. Maximal degree in co-relation 74392. Up to 6583 conditions per place. [2024-06-28 03:00:54,239 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 533 selfloop transitions, 181 changer transitions 0/730 dead transitions. [2024-06-28 03:00:54,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 730 transitions, 13760 flow [2024-06-28 03:00:54,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:54,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:54,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-28 03:00:54,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-06-28 03:00:54,240 INFO L175 Difference]: Start difference. First operand has 326 places, 686 transitions, 12039 flow. Second operand 10 states and 205 transitions. [2024-06-28 03:00:54,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 730 transitions, 13760 flow [2024-06-28 03:00:55,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 730 transitions, 13390 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:55,743 INFO L231 Difference]: Finished difference. Result has 328 places, 689 transitions, 12104 flow [2024-06-28 03:00:55,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11669, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12104, PETRI_PLACES=328, PETRI_TRANSITIONS=689} [2024-06-28 03:00:55,744 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 284 predicate places. [2024-06-28 03:00:55,744 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 689 transitions, 12104 flow [2024-06-28 03:00:55,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:55,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:55,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:55,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:00:55,744 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:55,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:55,744 INFO L85 PathProgramCache]: Analyzing trace with hash 777521046, now seen corresponding path program 9 times [2024-06-28 03:00:55,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:55,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477611270] [2024-06-28 03:00:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:55,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:56,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:56,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477611270] [2024-06-28 03:00:56,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477611270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:56,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:56,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:56,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226883141] [2024-06-28 03:00:56,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:56,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:56,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:56,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:56,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:56,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:56,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 689 transitions, 12104 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:56,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:56,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:56,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:58,864 INFO L124 PetriNetUnfolderBase]: 5026/7754 cut-off events. [2024-06-28 03:00:58,865 INFO L125 PetriNetUnfolderBase]: For 756234/756251 co-relation queries the response was YES. [2024-06-28 03:00:58,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74641 conditions, 7754 events. 5026/7754 cut-off events. For 756234/756251 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 45753 event pairs, 1272 based on Foata normal form. 10/7746 useless extension candidates. Maximal degree in co-relation 74492. Up to 6543 conditions per place. [2024-06-28 03:00:58,976 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 530 selfloop transitions, 189 changer transitions 0/735 dead transitions. [2024-06-28 03:00:58,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 735 transitions, 13857 flow [2024-06-28 03:00:58,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:58,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 208 transitions. [2024-06-28 03:00:58,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48372093023255813 [2024-06-28 03:00:58,977 INFO L175 Difference]: Start difference. First operand has 328 places, 689 transitions, 12104 flow. Second operand 10 states and 208 transitions. [2024-06-28 03:00:58,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 735 transitions, 13857 flow [2024-06-28 03:01:00,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 735 transitions, 13461 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 03:01:00,658 INFO L231 Difference]: Finished difference. Result has 330 places, 692 transitions, 12166 flow [2024-06-28 03:01:00,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11708, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12166, PETRI_PLACES=330, PETRI_TRANSITIONS=692} [2024-06-28 03:01:00,659 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 286 predicate places. [2024-06-28 03:01:00,659 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 692 transitions, 12166 flow [2024-06-28 03:01:00,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:00,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:00,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:00,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:01:00,659 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:00,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:00,660 INFO L85 PathProgramCache]: Analyzing trace with hash 783090816, now seen corresponding path program 10 times [2024-06-28 03:01:00,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:00,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621403043] [2024-06-28 03:01:00,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:00,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:01,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621403043] [2024-06-28 03:01:01,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621403043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:01,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:01,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:01:01,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021465764] [2024-06-28 03:01:01,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:01,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:01:01,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:01,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:01:01,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:01:01,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:01,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 692 transitions, 12166 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:01,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:01,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:01,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:03,824 INFO L124 PetriNetUnfolderBase]: 5049/7794 cut-off events. [2024-06-28 03:01:03,824 INFO L125 PetriNetUnfolderBase]: For 780871/780893 co-relation queries the response was YES. [2024-06-28 03:01:03,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75272 conditions, 7794 events. 5049/7794 cut-off events. For 780871/780893 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 46056 event pairs, 1267 based on Foata normal form. 16/7794 useless extension candidates. Maximal degree in co-relation 75122. Up to 6607 conditions per place. [2024-06-28 03:01:03,940 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 546 selfloop transitions, 173 changer transitions 0/735 dead transitions. [2024-06-28 03:01:03,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 735 transitions, 13905 flow [2024-06-28 03:01:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:01:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:01:03,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-28 03:01:03,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720930232558139 [2024-06-28 03:01:03,942 INFO L175 Difference]: Start difference. First operand has 330 places, 692 transitions, 12166 flow. Second operand 10 states and 203 transitions. [2024-06-28 03:01:03,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 735 transitions, 13905 flow [2024-06-28 03:01:05,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 735 transitions, 13488 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 03:01:05,596 INFO L231 Difference]: Finished difference. Result has 332 places, 695 transitions, 12180 flow [2024-06-28 03:01:05,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11749, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12180, PETRI_PLACES=332, PETRI_TRANSITIONS=695} [2024-06-28 03:01:05,597 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 288 predicate places. [2024-06-28 03:01:05,597 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 695 transitions, 12180 flow [2024-06-28 03:01:05,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:05,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:05,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:05,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:01:05,597 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:05,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:05,598 INFO L85 PathProgramCache]: Analyzing trace with hash 782883426, now seen corresponding path program 11 times [2024-06-28 03:01:05,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:05,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789019604] [2024-06-28 03:01:05,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:05,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:06,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:06,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789019604] [2024-06-28 03:01:06,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789019604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:06,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:06,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:01:06,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898613952] [2024-06-28 03:01:06,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:06,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:01:06,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:06,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:01:06,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:01:06,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:06,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 695 transitions, 12180 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:06,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:06,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:06,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:08,810 INFO L124 PetriNetUnfolderBase]: 5059/7811 cut-off events. [2024-06-28 03:01:08,810 INFO L125 PetriNetUnfolderBase]: For 799969/799991 co-relation queries the response was YES. [2024-06-28 03:01:08,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75544 conditions, 7811 events. 5059/7811 cut-off events. For 799969/799991 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 46174 event pairs, 1264 based on Foata normal form. 16/7811 useless extension candidates. Maximal degree in co-relation 75393. Up to 6566 conditions per place. [2024-06-28 03:01:08,929 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 542 selfloop transitions, 182 changer transitions 0/740 dead transitions. [2024-06-28 03:01:08,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 740 transitions, 13951 flow [2024-06-28 03:01:08,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:01:08,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:01:08,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-28 03:01:08,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790697674418605 [2024-06-28 03:01:08,930 INFO L175 Difference]: Start difference. First operand has 332 places, 695 transitions, 12180 flow. Second operand 10 states and 206 transitions. [2024-06-28 03:01:08,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 740 transitions, 13951 flow [2024-06-28 03:01:10,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 740 transitions, 13559 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 03:01:10,656 INFO L231 Difference]: Finished difference. Result has 334 places, 698 transitions, 12244 flow [2024-06-28 03:01:10,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11788, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12244, PETRI_PLACES=334, PETRI_TRANSITIONS=698} [2024-06-28 03:01:10,657 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 290 predicate places. [2024-06-28 03:01:10,657 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 698 transitions, 12244 flow [2024-06-28 03:01:10,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:10,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:10,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:10,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:01:10,658 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:10,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:10,658 INFO L85 PathProgramCache]: Analyzing trace with hash 782883271, now seen corresponding path program 12 times [2024-06-28 03:01:10,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:10,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782693281] [2024-06-28 03:01:10,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:10,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:11,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:11,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782693281] [2024-06-28 03:01:11,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782693281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:11,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:11,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:01:11,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332441647] [2024-06-28 03:01:11,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:11,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:01:11,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:11,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:01:11,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:01:11,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:11,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 698 transitions, 12244 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:11,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:11,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:11,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:13,832 INFO L124 PetriNetUnfolderBase]: 5044/7813 cut-off events. [2024-06-28 03:01:13,832 INFO L125 PetriNetUnfolderBase]: For 811720/811789 co-relation queries the response was YES. [2024-06-28 03:01:13,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74964 conditions, 7813 events. 5044/7813 cut-off events. For 811720/811789 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 46424 event pairs, 1078 based on Foata normal form. 44/7810 useless extension candidates. Maximal degree in co-relation 74812. Up to 6644 conditions per place. [2024-06-28 03:01:13,933 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 470 selfloop transitions, 247 changer transitions 0/733 dead transitions. [2024-06-28 03:01:13,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 733 transitions, 13881 flow [2024-06-28 03:01:13,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:01:13,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:01:13,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:01:13,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-28 03:01:13,934 INFO L175 Difference]: Start difference. First operand has 334 places, 698 transitions, 12244 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:01:13,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 733 transitions, 13881 flow [2024-06-28 03:01:15,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 733 transitions, 13466 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 03:01:15,384 INFO L231 Difference]: Finished difference. Result has 336 places, 700 transitions, 12387 flow [2024-06-28 03:01:15,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11829, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12387, PETRI_PLACES=336, PETRI_TRANSITIONS=700} [2024-06-28 03:01:15,385 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 292 predicate places. [2024-06-28 03:01:15,385 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 700 transitions, 12387 flow [2024-06-28 03:01:15,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:15,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:15,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:15,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:01:15,385 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:15,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:15,386 INFO L85 PathProgramCache]: Analyzing trace with hash -2012977643, now seen corresponding path program 2 times [2024-06-28 03:01:15,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:15,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291584084] [2024-06-28 03:01:15,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:15,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:16,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:16,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291584084] [2024-06-28 03:01:16,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291584084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:16,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:16,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:01:16,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745135862] [2024-06-28 03:01:16,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:16,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:01:16,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:16,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:01:16,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:01:16,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:01:16,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 700 transitions, 12387 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:16,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:16,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:01:16,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:18,297 INFO L124 PetriNetUnfolderBase]: 5487/8341 cut-off events. [2024-06-28 03:01:18,297 INFO L125 PetriNetUnfolderBase]: For 841669/841682 co-relation queries the response was YES. [2024-06-28 03:01:18,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78313 conditions, 8341 events. 5487/8341 cut-off events. For 841669/841682 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 48018 event pairs, 1573 based on Foata normal form. 13/8342 useless extension candidates. Maximal degree in co-relation 78160. Up to 7484 conditions per place. [2024-06-28 03:01:18,396 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 564 selfloop transitions, 75 changer transitions 0/740 dead transitions. [2024-06-28 03:01:18,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 740 transitions, 14339 flow [2024-06-28 03:01:18,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:01:18,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:01:18,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:01:18,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-28 03:01:18,397 INFO L175 Difference]: Start difference. First operand has 336 places, 700 transitions, 12387 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:01:18,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 740 transitions, 14339 flow [2024-06-28 03:01:20,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 740 transitions, 13932 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 03:01:20,023 INFO L231 Difference]: Finished difference. Result has 337 places, 716 transitions, 12367 flow [2024-06-28 03:01:20,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11980, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12367, PETRI_PLACES=337, PETRI_TRANSITIONS=716} [2024-06-28 03:01:20,024 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 293 predicate places. [2024-06-28 03:01:20,024 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 716 transitions, 12367 flow [2024-06-28 03:01:20,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:20,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:20,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:20,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:01:20,025 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:20,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:20,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1390784889, now seen corresponding path program 2 times [2024-06-28 03:01:20,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:20,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820980227] [2024-06-28 03:01:20,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:20,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:20,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:20,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820980227] [2024-06-28 03:01:20,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820980227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:20,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:20,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:01:20,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872331523] [2024-06-28 03:01:20,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:20,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:01:20,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:20,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:01:20,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:01:20,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:01:20,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 716 transitions, 12367 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:20,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:20,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:01:20,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:22,848 INFO L124 PetriNetUnfolderBase]: 5511/8379 cut-off events. [2024-06-28 03:01:22,848 INFO L125 PetriNetUnfolderBase]: For 864198/864205 co-relation queries the response was YES. [2024-06-28 03:01:22,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78254 conditions, 8379 events. 5511/8379 cut-off events. For 864198/864205 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 48330 event pairs, 1801 based on Foata normal form. 9/8378 useless extension candidates. Maximal degree in co-relation 78099. Up to 7722 conditions per place. [2024-06-28 03:01:22,970 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 605 selfloop transitions, 42 changer transitions 0/748 dead transitions. [2024-06-28 03:01:22,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 748 transitions, 14002 flow [2024-06-28 03:01:22,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:01:22,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:01:22,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:01:22,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42151162790697677 [2024-06-28 03:01:22,971 INFO L175 Difference]: Start difference. First operand has 337 places, 716 transitions, 12367 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:01:22,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 748 transitions, 14002 flow [2024-06-28 03:01:25,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 748 transitions, 13907 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 03:01:25,047 INFO L231 Difference]: Finished difference. Result has 343 places, 727 transitions, 12525 flow [2024-06-28 03:01:25,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12272, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12525, PETRI_PLACES=343, PETRI_TRANSITIONS=727} [2024-06-28 03:01:25,047 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 299 predicate places. [2024-06-28 03:01:25,047 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 727 transitions, 12525 flow [2024-06-28 03:01:25,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:25,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:25,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:25,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:01:25,048 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:25,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:25,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1440632393, now seen corresponding path program 3 times [2024-06-28 03:01:25,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:25,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435878071] [2024-06-28 03:01:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:25,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:25,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:25,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435878071] [2024-06-28 03:01:25,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435878071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:25,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:25,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:01:25,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162243357] [2024-06-28 03:01:25,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:25,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:01:25,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:25,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:01:25,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:01:25,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:01:25,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 727 transitions, 12525 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:25,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:25,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:01:25,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:27,867 INFO L124 PetriNetUnfolderBase]: 5505/8370 cut-off events. [2024-06-28 03:01:27,867 INFO L125 PetriNetUnfolderBase]: For 879087/879105 co-relation queries the response was YES. [2024-06-28 03:01:27,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78906 conditions, 8370 events. 5505/8370 cut-off events. For 879087/879105 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 48181 event pairs, 1574 based on Foata normal form. 19/8377 useless extension candidates. Maximal degree in co-relation 78749. Up to 7513 conditions per place. [2024-06-28 03:01:27,997 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 574 selfloop transitions, 72 changer transitions 0/747 dead transitions. [2024-06-28 03:01:27,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 747 transitions, 14169 flow [2024-06-28 03:01:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:01:27,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:01:27,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:01:27,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2024-06-28 03:01:27,998 INFO L175 Difference]: Start difference. First operand has 343 places, 727 transitions, 12525 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:01:27,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 747 transitions, 14169 flow [2024-06-28 03:01:30,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 747 transitions, 14082 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 03:01:30,011 INFO L231 Difference]: Finished difference. Result has 347 places, 727 transitions, 12591 flow [2024-06-28 03:01:30,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12438, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12591, PETRI_PLACES=347, PETRI_TRANSITIONS=727} [2024-06-28 03:01:30,012 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 303 predicate places. [2024-06-28 03:01:30,012 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 727 transitions, 12591 flow [2024-06-28 03:01:30,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:30,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:30,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:30,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:01:30,013 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:30,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:30,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1175052857, now seen corresponding path program 13 times [2024-06-28 03:01:30,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:30,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821767167] [2024-06-28 03:01:30,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:30,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:31,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:31,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821767167] [2024-06-28 03:01:31,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821767167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:31,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:31,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:01:31,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956168329] [2024-06-28 03:01:31,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:31,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:01:31,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:31,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:01:31,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:01:31,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:31,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 727 transitions, 12591 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:31,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:31,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:31,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:32,960 INFO L124 PetriNetUnfolderBase]: 5174/7959 cut-off events. [2024-06-28 03:01:32,961 INFO L125 PetriNetUnfolderBase]: For 928466/928504 co-relation queries the response was YES. [2024-06-28 03:01:33,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78257 conditions, 7959 events. 5174/7959 cut-off events. For 928466/928504 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 47184 event pairs, 927 based on Foata normal form. 26/7951 useless extension candidates. Maximal degree in co-relation 78098. Up to 5536 conditions per place. [2024-06-28 03:01:33,076 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 385 selfloop transitions, 363 changer transitions 0/768 dead transitions. [2024-06-28 03:01:33,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 768 transitions, 14599 flow [2024-06-28 03:01:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:01:33,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:01:33,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-28 03:01:33,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702842377260982 [2024-06-28 03:01:33,078 INFO L175 Difference]: Start difference. First operand has 347 places, 727 transitions, 12591 flow. Second operand 9 states and 182 transitions. [2024-06-28 03:01:33,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 768 transitions, 14599 flow [2024-06-28 03:01:35,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 768 transitions, 14460 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 03:01:35,244 INFO L231 Difference]: Finished difference. Result has 351 places, 731 transitions, 13282 flow [2024-06-28 03:01:35,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12452, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13282, PETRI_PLACES=351, PETRI_TRANSITIONS=731} [2024-06-28 03:01:35,244 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 307 predicate places. [2024-06-28 03:01:35,245 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 731 transitions, 13282 flow [2024-06-28 03:01:35,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:35,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:35,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:35,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:01:35,245 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:35,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:35,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1173175187, now seen corresponding path program 14 times [2024-06-28 03:01:35,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:35,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542657795] [2024-06-28 03:01:35,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:35,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:36,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:36,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542657795] [2024-06-28 03:01:36,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542657795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:36,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:36,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:01:36,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503580752] [2024-06-28 03:01:36,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:36,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:01:36,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:36,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:01:36,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:01:36,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:36,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 731 transitions, 13282 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:36,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:36,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:36,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:38,266 INFO L124 PetriNetUnfolderBase]: 5193/8011 cut-off events. [2024-06-28 03:01:38,266 INFO L125 PetriNetUnfolderBase]: For 943866/943898 co-relation queries the response was YES. [2024-06-28 03:01:38,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79949 conditions, 8011 events. 5193/8011 cut-off events. For 943866/943898 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 47553 event pairs, 1228 based on Foata normal form. 28/8017 useless extension candidates. Maximal degree in co-relation 79789. Up to 6777 conditions per place. [2024-06-28 03:01:38,391 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 497 selfloop transitions, 255 changer transitions 0/772 dead transitions. [2024-06-28 03:01:38,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 772 transitions, 15113 flow [2024-06-28 03:01:38,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:01:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:01:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 03:01:38,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2024-06-28 03:01:38,392 INFO L175 Difference]: Start difference. First operand has 351 places, 731 transitions, 13282 flow. Second operand 9 states and 178 transitions. [2024-06-28 03:01:38,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 772 transitions, 15113 flow [2024-06-28 03:01:40,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 772 transitions, 14504 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 03:01:40,563 INFO L231 Difference]: Finished difference. Result has 353 places, 737 transitions, 13351 flow [2024-06-28 03:01:40,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12679, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13351, PETRI_PLACES=353, PETRI_TRANSITIONS=737} [2024-06-28 03:01:40,564 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 309 predicate places. [2024-06-28 03:01:40,564 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 737 transitions, 13351 flow [2024-06-28 03:01:40,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:40,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:40,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:40,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:01:40,565 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:40,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:40,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1173178907, now seen corresponding path program 15 times [2024-06-28 03:01:40,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:40,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309554702] [2024-06-28 03:01:40,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:40,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:41,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:41,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309554702] [2024-06-28 03:01:41,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309554702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:41,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:41,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:01:41,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426626916] [2024-06-28 03:01:41,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:41,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:01:41,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:41,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:01:41,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:01:41,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:41,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 737 transitions, 13351 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:41,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:41,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:41,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:43,615 INFO L124 PetriNetUnfolderBase]: 5316/8200 cut-off events. [2024-06-28 03:01:43,616 INFO L125 PetriNetUnfolderBase]: For 926185/926217 co-relation queries the response was YES. [2024-06-28 03:01:43,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80983 conditions, 8200 events. 5316/8200 cut-off events. For 926185/926217 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 48886 event pairs, 1187 based on Foata normal form. 30/8206 useless extension candidates. Maximal degree in co-relation 80823. Up to 6485 conditions per place. [2024-06-28 03:01:43,739 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 449 selfloop transitions, 328 changer transitions 0/797 dead transitions. [2024-06-28 03:01:43,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 797 transitions, 15797 flow [2024-06-28 03:01:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:01:43,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:01:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-06-28 03:01:43,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46744186046511627 [2024-06-28 03:01:43,740 INFO L175 Difference]: Start difference. First operand has 353 places, 737 transitions, 13351 flow. Second operand 10 states and 201 transitions. [2024-06-28 03:01:43,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 797 transitions, 15797 flow [2024-06-28 03:01:45,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 797 transitions, 15214 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-28 03:01:45,768 INFO L231 Difference]: Finished difference. Result has 355 places, 753 transitions, 13847 flow [2024-06-28 03:01:45,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12784, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13847, PETRI_PLACES=355, PETRI_TRANSITIONS=753} [2024-06-28 03:01:45,768 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 311 predicate places. [2024-06-28 03:01:45,768 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 753 transitions, 13847 flow [2024-06-28 03:01:45,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:45,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:45,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:45,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:01:45,769 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:45,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:45,769 INFO L85 PathProgramCache]: Analyzing trace with hash 421385863, now seen corresponding path program 16 times [2024-06-28 03:01:45,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:45,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394738952] [2024-06-28 03:01:45,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:45,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:46,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:46,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394738952] [2024-06-28 03:01:46,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394738952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:46,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:46,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:01:46,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121495045] [2024-06-28 03:01:46,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:46,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:01:46,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:46,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:01:46,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:01:46,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:46,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 753 transitions, 13847 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:46,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:46,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:46,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:48,944 INFO L124 PetriNetUnfolderBase]: 5361/8281 cut-off events. [2024-06-28 03:01:48,944 INFO L125 PetriNetUnfolderBase]: For 902823/902849 co-relation queries the response was YES. [2024-06-28 03:01:49,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81594 conditions, 8281 events. 5361/8281 cut-off events. For 902823/902849 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 49765 event pairs, 994 based on Foata normal form. 24/8280 useless extension candidates. Maximal degree in co-relation 81434. Up to 6793 conditions per place. [2024-06-28 03:01:49,088 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 537 selfloop transitions, 246 changer transitions 0/803 dead transitions. [2024-06-28 03:01:49,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 803 transitions, 16093 flow [2024-06-28 03:01:49,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:01:49,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:01:49,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-28 03:01:49,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48320413436692505 [2024-06-28 03:01:49,089 INFO L175 Difference]: Start difference. First operand has 355 places, 753 transitions, 13847 flow. Second operand 9 states and 187 transitions. [2024-06-28 03:01:49,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 803 transitions, 16093 flow [2024-06-28 03:01:50,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 803 transitions, 15679 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-28 03:01:50,785 INFO L231 Difference]: Finished difference. Result has 357 places, 761 transitions, 14147 flow [2024-06-28 03:01:50,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13441, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14147, PETRI_PLACES=357, PETRI_TRANSITIONS=761} [2024-06-28 03:01:50,785 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 313 predicate places. [2024-06-28 03:01:50,785 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 761 transitions, 14147 flow [2024-06-28 03:01:50,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:50,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:50,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:50,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:01:50,786 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:50,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:50,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1721029603, now seen corresponding path program 1 times [2024-06-28 03:01:50,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:50,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680785624] [2024-06-28 03:01:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:50,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:51,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:51,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680785624] [2024-06-28 03:01:51,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680785624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:51,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:51,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:01:51,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092362134] [2024-06-28 03:01:51,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:51,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:01:51,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:51,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:01:51,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:01:51,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:01:51,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 761 transitions, 14147 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:51,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:51,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:01:51,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:53,761 INFO L124 PetriNetUnfolderBase]: 5847/8904 cut-off events. [2024-06-28 03:01:53,761 INFO L125 PetriNetUnfolderBase]: For 935788/935801 co-relation queries the response was YES. [2024-06-28 03:01:53,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85979 conditions, 8904 events. 5847/8904 cut-off events. For 935788/935801 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 52170 event pairs, 1657 based on Foata normal form. 17/8909 useless extension candidates. Maximal degree in co-relation 85818. Up to 7731 conditions per place. [2024-06-28 03:01:53,906 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 608 selfloop transitions, 88 changer transitions 0/814 dead transitions. [2024-06-28 03:01:53,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 814 transitions, 16515 flow [2024-06-28 03:01:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:01:53,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:01:53,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 03:01:53,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46770025839793283 [2024-06-28 03:01:53,907 INFO L175 Difference]: Start difference. First operand has 357 places, 761 transitions, 14147 flow. Second operand 9 states and 181 transitions. [2024-06-28 03:01:53,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 814 transitions, 16515 flow [2024-06-28 03:01:56,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 814 transitions, 15554 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-06-28 03:01:56,149 INFO L231 Difference]: Finished difference. Result has 361 places, 779 transitions, 13748 flow [2024-06-28 03:01:56,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13194, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=684, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13748, PETRI_PLACES=361, PETRI_TRANSITIONS=779} [2024-06-28 03:01:56,149 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 317 predicate places. [2024-06-28 03:01:56,149 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 779 transitions, 13748 flow [2024-06-28 03:01:56,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:56,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:56,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:56,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:01:56,150 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:56,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:56,150 INFO L85 PathProgramCache]: Analyzing trace with hash 421389583, now seen corresponding path program 17 times [2024-06-28 03:01:56,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:56,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048338914] [2024-06-28 03:01:56,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:56,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:57,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:57,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048338914] [2024-06-28 03:01:57,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048338914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:57,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:57,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:01:57,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998987342] [2024-06-28 03:01:57,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:57,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:01:57,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:57,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:01:57,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:01:57,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:57,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 779 transitions, 13748 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:57,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:57,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:57,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:59,497 INFO L124 PetriNetUnfolderBase]: 5590/8604 cut-off events. [2024-06-28 03:01:59,497 INFO L125 PetriNetUnfolderBase]: For 938503/938529 co-relation queries the response was YES. [2024-06-28 03:01:59,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84974 conditions, 8604 events. 5590/8604 cut-off events. For 938503/938529 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 51686 event pairs, 1318 based on Foata normal form. 24/8603 useless extension candidates. Maximal degree in co-relation 84810. Up to 7579 conditions per place. [2024-06-28 03:01:59,637 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 609 selfloop transitions, 202 changer transitions 0/831 dead transitions. [2024-06-28 03:01:59,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 831 transitions, 15863 flow [2024-06-28 03:01:59,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:01:59,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:01:59,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 03:01:59,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728682170542636 [2024-06-28 03:01:59,638 INFO L175 Difference]: Start difference. First operand has 361 places, 779 transitions, 13748 flow. Second operand 9 states and 183 transitions. [2024-06-28 03:01:59,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 831 transitions, 15863 flow [2024-06-28 03:02:01,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 831 transitions, 15783 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-28 03:02:01,466 INFO L231 Difference]: Finished difference. Result has 368 places, 793 transitions, 14393 flow [2024-06-28 03:02:01,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13668, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14393, PETRI_PLACES=368, PETRI_TRANSITIONS=793} [2024-06-28 03:02:01,467 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 324 predicate places. [2024-06-28 03:02:01,467 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 793 transitions, 14393 flow [2024-06-28 03:02:01,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:01,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:01,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:01,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:02:01,468 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:01,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:01,468 INFO L85 PathProgramCache]: Analyzing trace with hash 421389738, now seen corresponding path program 12 times [2024-06-28 03:02:01,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:01,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527414569] [2024-06-28 03:02:01,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:01,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:02,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:02,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:02,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527414569] [2024-06-28 03:02:02,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527414569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:02,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:02,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:02:02,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912272577] [2024-06-28 03:02:02,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:02,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:02:02,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:02,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:02:02,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:02:02,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:02,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 793 transitions, 14393 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:02,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:02,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:02,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:04,679 INFO L124 PetriNetUnfolderBase]: 5683/8739 cut-off events. [2024-06-28 03:02:04,679 INFO L125 PetriNetUnfolderBase]: For 975322/975350 co-relation queries the response was YES. [2024-06-28 03:02:04,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87385 conditions, 8739 events. 5683/8739 cut-off events. For 975322/975350 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 52702 event pairs, 1274 based on Foata normal form. 20/8739 useless extension candidates. Maximal degree in co-relation 87218. Up to 6818 conditions per place. [2024-06-28 03:02:04,822 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 520 selfloop transitions, 320 changer transitions 0/860 dead transitions. [2024-06-28 03:02:04,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 860 transitions, 17408 flow [2024-06-28 03:02:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:02:04,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:02:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-28 03:02:04,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116279069767442 [2024-06-28 03:02:04,825 INFO L175 Difference]: Start difference. First operand has 368 places, 793 transitions, 14393 flow. Second operand 9 states and 198 transitions. [2024-06-28 03:02:04,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 860 transitions, 17408 flow [2024-06-28 03:02:06,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 860 transitions, 16935 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 03:02:06,843 INFO L231 Difference]: Finished difference. Result has 371 places, 810 transitions, 14982 flow [2024-06-28 03:02:06,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13920, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14982, PETRI_PLACES=371, PETRI_TRANSITIONS=810} [2024-06-28 03:02:06,844 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 327 predicate places. [2024-06-28 03:02:06,844 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 810 transitions, 14982 flow [2024-06-28 03:02:06,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:06,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:06,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:06,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:02:06,845 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:06,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:06,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1086333492, now seen corresponding path program 13 times [2024-06-28 03:02:06,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:06,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642082233] [2024-06-28 03:02:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:06,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:07,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:07,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642082233] [2024-06-28 03:02:07,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642082233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:07,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:07,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:02:07,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924183224] [2024-06-28 03:02:07,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:07,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:02:07,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:07,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:02:07,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:02:08,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:08,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 810 transitions, 14982 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:08,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:08,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:08,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:10,063 INFO L124 PetriNetUnfolderBase]: 5723/8821 cut-off events. [2024-06-28 03:02:10,063 INFO L125 PetriNetUnfolderBase]: For 1007871/1007893 co-relation queries the response was YES. [2024-06-28 03:02:10,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89292 conditions, 8821 events. 5723/8821 cut-off events. For 1007871/1007893 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 53406 event pairs, 1409 based on Foata normal form. 18/8823 useless extension candidates. Maximal degree in co-relation 89123. Up to 7428 conditions per place. [2024-06-28 03:02:10,206 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 623 selfloop transitions, 208 changer transitions 0/851 dead transitions. [2024-06-28 03:02:10,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 851 transitions, 17011 flow [2024-06-28 03:02:10,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:02:10,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:02:10,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 03:02:10,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46770025839793283 [2024-06-28 03:02:10,208 INFO L175 Difference]: Start difference. First operand has 371 places, 810 transitions, 14982 flow. Second operand 9 states and 181 transitions. [2024-06-28 03:02:10,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 851 transitions, 17011 flow [2024-06-28 03:02:12,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 851 transitions, 16896 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-28 03:02:12,639 INFO L231 Difference]: Finished difference. Result has 376 places, 816 transitions, 15419 flow [2024-06-28 03:02:12,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=14873, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15419, PETRI_PLACES=376, PETRI_TRANSITIONS=816} [2024-06-28 03:02:12,640 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 332 predicate places. [2024-06-28 03:02:12,640 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 816 transitions, 15419 flow [2024-06-28 03:02:12,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:12,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:12,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:12,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:02:12,640 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:12,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:12,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1086339072, now seen corresponding path program 14 times [2024-06-28 03:02:12,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:12,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483898894] [2024-06-28 03:02:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:12,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:13,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:13,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483898894] [2024-06-28 03:02:13,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483898894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:13,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:13,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:02:13,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4196436] [2024-06-28 03:02:13,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:13,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:02:13,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:13,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:02:13,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:02:13,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:13,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 816 transitions, 15419 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:13,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:13,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:13,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:16,048 INFO L124 PetriNetUnfolderBase]: 5759/8893 cut-off events. [2024-06-28 03:02:16,048 INFO L125 PetriNetUnfolderBase]: For 1013342/1013364 co-relation queries the response was YES. [2024-06-28 03:02:16,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90510 conditions, 8893 events. 5759/8893 cut-off events. For 1013342/1013364 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 54121 event pairs, 1401 based on Foata normal form. 18/8895 useless extension candidates. Maximal degree in co-relation 90340. Up to 7398 conditions per place. [2024-06-28 03:02:16,190 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 610 selfloop transitions, 232 changer transitions 0/862 dead transitions. [2024-06-28 03:02:16,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 862 transitions, 17505 flow [2024-06-28 03:02:16,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:02:16,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:02:16,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-28 03:02:16,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604651162790698 [2024-06-28 03:02:16,192 INFO L175 Difference]: Start difference. First operand has 376 places, 816 transitions, 15419 flow. Second operand 10 states and 198 transitions. [2024-06-28 03:02:16,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 862 transitions, 17505 flow [2024-06-28 03:02:18,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 862 transitions, 17039 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 03:02:18,586 INFO L231 Difference]: Finished difference. Result has 379 places, 822 transitions, 15573 flow [2024-06-28 03:02:18,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=14953, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=816, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15573, PETRI_PLACES=379, PETRI_TRANSITIONS=822} [2024-06-28 03:02:18,586 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 335 predicate places. [2024-06-28 03:02:18,586 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 822 transitions, 15573 flow [2024-06-28 03:02:18,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:18,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:18,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:18,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:02:18,586 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:18,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:18,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1086339227, now seen corresponding path program 18 times [2024-06-28 03:02:18,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:18,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723874310] [2024-06-28 03:02:18,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:18,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:19,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:19,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723874310] [2024-06-28 03:02:19,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723874310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:19,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:19,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:02:19,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432727921] [2024-06-28 03:02:19,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:19,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:02:19,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:19,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:02:19,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:02:19,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:19,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 822 transitions, 15573 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:19,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:19,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:19,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:22,079 INFO L124 PetriNetUnfolderBase]: 5848/9026 cut-off events. [2024-06-28 03:02:22,079 INFO L125 PetriNetUnfolderBase]: For 1056350/1056372 co-relation queries the response was YES. [2024-06-28 03:02:22,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92176 conditions, 9026 events. 5848/9026 cut-off events. For 1056350/1056372 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 55029 event pairs, 1405 based on Foata normal form. 22/9024 useless extension candidates. Maximal degree in co-relation 92005. Up to 8119 conditions per place. [2024-06-28 03:02:22,231 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 712 selfloop transitions, 130 changer transitions 0/862 dead transitions. [2024-06-28 03:02:22,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 862 transitions, 17648 flow [2024-06-28 03:02:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:02:22,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:02:22,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 03:02:22,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45219638242894056 [2024-06-28 03:02:22,232 INFO L175 Difference]: Start difference. First operand has 379 places, 822 transitions, 15573 flow. Second operand 9 states and 175 transitions. [2024-06-28 03:02:22,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 862 transitions, 17648 flow [2024-06-28 03:02:24,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 862 transitions, 17132 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 03:02:24,778 INFO L231 Difference]: Finished difference. Result has 380 places, 830 transitions, 15530 flow [2024-06-28 03:02:24,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15057, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=822, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15530, PETRI_PLACES=380, PETRI_TRANSITIONS=830} [2024-06-28 03:02:24,779 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 336 predicate places. [2024-06-28 03:02:24,779 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 830 transitions, 15530 flow [2024-06-28 03:02:24,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:24,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:24,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:24,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:02:24,779 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:24,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:24,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1086483377, now seen corresponding path program 19 times [2024-06-28 03:02:24,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:24,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510749148] [2024-06-28 03:02:24,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:24,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:25,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:25,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:25,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510749148] [2024-06-28 03:02:25,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510749148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:25,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:25,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:02:25,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890493986] [2024-06-28 03:02:25,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:25,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:02:25,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:25,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:02:25,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:02:25,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:25,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 830 transitions, 15530 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:25,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:25,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:25,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:28,217 INFO L124 PetriNetUnfolderBase]: 5786/8931 cut-off events. [2024-06-28 03:02:28,217 INFO L125 PetriNetUnfolderBase]: For 1024997/1025019 co-relation queries the response was YES. [2024-06-28 03:02:28,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90139 conditions, 8931 events. 5786/8931 cut-off events. For 1024997/1025019 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 54377 event pairs, 1403 based on Foata normal form. 22/8928 useless extension candidates. Maximal degree in co-relation 89967. Up to 7887 conditions per place. [2024-06-28 03:02:28,363 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 674 selfloop transitions, 173 changer transitions 0/867 dead transitions. [2024-06-28 03:02:28,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 867 transitions, 17472 flow [2024-06-28 03:02:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:02:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:02:28,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-28 03:02:28,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44651162790697674 [2024-06-28 03:02:28,364 INFO L175 Difference]: Start difference. First operand has 380 places, 830 transitions, 15530 flow. Second operand 10 states and 192 transitions. [2024-06-28 03:02:28,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 867 transitions, 17472 flow [2024-06-28 03:02:30,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 867 transitions, 17075 flow, removed 78 selfloop flow, removed 7 redundant places. [2024-06-28 03:02:30,951 INFO L231 Difference]: Finished difference. Result has 383 places, 830 transitions, 15521 flow [2024-06-28 03:02:30,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15133, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15521, PETRI_PLACES=383, PETRI_TRANSITIONS=830} [2024-06-28 03:02:30,952 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 339 predicate places. [2024-06-28 03:02:30,952 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 830 transitions, 15521 flow [2024-06-28 03:02:30,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:30,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:30,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:30,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:02:30,952 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:30,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:30,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1086483222, now seen corresponding path program 15 times [2024-06-28 03:02:30,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:30,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122244267] [2024-06-28 03:02:30,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:30,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:31,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:31,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:31,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122244267] [2024-06-28 03:02:31,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122244267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:31,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:31,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:02:31,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964990697] [2024-06-28 03:02:31,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:31,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:02:31,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:31,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:02:31,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:02:32,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:32,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 830 transitions, 15521 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:32,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:32,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:32,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:34,226 INFO L124 PetriNetUnfolderBase]: 5770/8926 cut-off events. [2024-06-28 03:02:34,226 INFO L125 PetriNetUnfolderBase]: For 1027167/1027189 co-relation queries the response was YES. [2024-06-28 03:02:34,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89977 conditions, 8926 events. 5770/8926 cut-off events. For 1027167/1027189 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 54542 event pairs, 1399 based on Foata normal form. 18/8928 useless extension candidates. Maximal degree in co-relation 89804. Up to 7266 conditions per place. [2024-06-28 03:02:34,374 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 582 selfloop transitions, 270 changer transitions 0/872 dead transitions. [2024-06-28 03:02:34,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 872 transitions, 17795 flow [2024-06-28 03:02:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:02:34,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:02:34,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-28 03:02:34,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48320413436692505 [2024-06-28 03:02:34,375 INFO L175 Difference]: Start difference. First operand has 383 places, 830 transitions, 15521 flow. Second operand 9 states and 187 transitions. [2024-06-28 03:02:34,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 872 transitions, 17795 flow [2024-06-28 03:02:36,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 872 transitions, 17279 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-28 03:02:36,754 INFO L231 Difference]: Finished difference. Result has 381 places, 830 transitions, 15571 flow [2024-06-28 03:02:36,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15013, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15571, PETRI_PLACES=381, PETRI_TRANSITIONS=830} [2024-06-28 03:02:36,754 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 337 predicate places. [2024-06-28 03:02:36,754 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 830 transitions, 15571 flow [2024-06-28 03:02:36,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:36,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:36,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:36,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:02:36,755 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:36,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:36,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1807280098, now seen corresponding path program 16 times [2024-06-28 03:02:36,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:36,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033797663] [2024-06-28 03:02:36,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:36,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:37,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:37,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:37,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033797663] [2024-06-28 03:02:37,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033797663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:37,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:37,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:02:37,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987329003] [2024-06-28 03:02:37,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:37,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:02:37,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:37,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:02:37,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:02:38,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:38,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 830 transitions, 15571 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:38,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:38,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:38,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:40,298 INFO L124 PetriNetUnfolderBase]: 5855/9024 cut-off events. [2024-06-28 03:02:40,298 INFO L125 PetriNetUnfolderBase]: For 1014434/1014452 co-relation queries the response was YES. [2024-06-28 03:02:40,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91071 conditions, 9024 events. 5855/9024 cut-off events. For 1014434/1014452 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 55071 event pairs, 1367 based on Foata normal form. 12/9015 useless extension candidates. Maximal degree in co-relation 90898. Up to 7495 conditions per place. [2024-06-28 03:02:40,448 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 618 selfloop transitions, 258 changer transitions 0/896 dead transitions. [2024-06-28 03:02:40,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 896 transitions, 18657 flow [2024-06-28 03:02:40,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:02:40,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:02:40,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2024-06-28 03:02:40,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906976744186046 [2024-06-28 03:02:40,450 INFO L175 Difference]: Start difference. First operand has 381 places, 830 transitions, 15571 flow. Second operand 10 states and 211 transitions. [2024-06-28 03:02:40,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 896 transitions, 18657 flow [2024-06-28 03:02:43,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 896 transitions, 17754 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 03:02:43,122 INFO L231 Difference]: Finished difference. Result has 382 places, 842 transitions, 15426 flow [2024-06-28 03:02:43,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=14692, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15426, PETRI_PLACES=382, PETRI_TRANSITIONS=842} [2024-06-28 03:02:43,123 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 338 predicate places. [2024-06-28 03:02:43,123 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 842 transitions, 15426 flow [2024-06-28 03:02:43,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:43,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:43,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:43,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:02:43,123 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:43,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:43,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1807280253, now seen corresponding path program 20 times [2024-06-28 03:02:43,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:43,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753667215] [2024-06-28 03:02:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:43,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:44,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:44,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:44,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753667215] [2024-06-28 03:02:44,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753667215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:44,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:44,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:02:44,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121798763] [2024-06-28 03:02:44,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:44,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:02:44,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:44,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:02:44,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:02:44,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:44,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 842 transitions, 15426 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:44,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:44,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:44,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:46,573 INFO L124 PetriNetUnfolderBase]: 5905/9105 cut-off events. [2024-06-28 03:02:46,573 INFO L125 PetriNetUnfolderBase]: For 1051231/1051249 co-relation queries the response was YES. [2024-06-28 03:02:46,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90735 conditions, 9105 events. 5905/9105 cut-off events. For 1051231/1051249 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 55618 event pairs, 1443 based on Foata normal form. 16/9093 useless extension candidates. Maximal degree in co-relation 90563. Up to 8209 conditions per place. [2024-06-28 03:02:46,720 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 725 selfloop transitions, 139 changer transitions 0/884 dead transitions. [2024-06-28 03:02:46,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 884 transitions, 17550 flow [2024-06-28 03:02:46,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:02:46,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:02:46,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 03:02:46,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2024-06-28 03:02:46,722 INFO L175 Difference]: Start difference. First operand has 382 places, 842 transitions, 15426 flow. Second operand 9 states and 178 transitions. [2024-06-28 03:02:46,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 884 transitions, 17550 flow [2024-06-28 03:02:49,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 884 transitions, 17190 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 03:02:49,411 INFO L231 Difference]: Finished difference. Result has 386 places, 850 transitions, 15573 flow [2024-06-28 03:02:49,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15066, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=842, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=703, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15573, PETRI_PLACES=386, PETRI_TRANSITIONS=850} [2024-06-28 03:02:49,412 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 342 predicate places. [2024-06-28 03:02:49,412 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 850 transitions, 15573 flow [2024-06-28 03:02:49,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:49,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:49,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:49,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:02:49,412 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:49,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:49,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1807274518, now seen corresponding path program 17 times [2024-06-28 03:02:49,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:49,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390642566] [2024-06-28 03:02:49,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:49,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:50,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:50,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390642566] [2024-06-28 03:02:50,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390642566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:50,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:50,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:02:50,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325766198] [2024-06-28 03:02:50,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:50,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:02:50,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:50,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:02:50,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:02:50,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:50,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 850 transitions, 15573 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:50,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:50,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:50,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:52,779 INFO L124 PetriNetUnfolderBase]: 5889/9080 cut-off events. [2024-06-28 03:02:52,779 INFO L125 PetriNetUnfolderBase]: For 1051395/1051413 co-relation queries the response was YES. [2024-06-28 03:02:52,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90818 conditions, 9080 events. 5889/9080 cut-off events. For 1051395/1051413 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 55430 event pairs, 1389 based on Foata normal form. 12/9071 useless extension candidates. Maximal degree in co-relation 90644. Up to 7685 conditions per place. [2024-06-28 03:02:52,925 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 646 selfloop transitions, 224 changer transitions 0/890 dead transitions. [2024-06-28 03:02:52,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 890 transitions, 17593 flow [2024-06-28 03:02:52,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:02:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:02:52,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 03:02:52,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780361757105943 [2024-06-28 03:02:52,926 INFO L175 Difference]: Start difference. First operand has 386 places, 850 transitions, 15573 flow. Second operand 9 states and 185 transitions. [2024-06-28 03:02:52,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 890 transitions, 17593 flow [2024-06-28 03:02:55,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 890 transitions, 17199 flow, removed 77 selfloop flow, removed 6 redundant places. [2024-06-28 03:02:55,326 INFO L231 Difference]: Finished difference. Result has 389 places, 850 transitions, 15645 flow [2024-06-28 03:02:55,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15179, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=850, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15645, PETRI_PLACES=389, PETRI_TRANSITIONS=850} [2024-06-28 03:02:55,326 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 345 predicate places. [2024-06-28 03:02:55,326 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 850 transitions, 15645 flow [2024-06-28 03:02:55,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:55,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:55,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:55,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:02:55,327 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:55,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:55,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1801912138, now seen corresponding path program 18 times [2024-06-28 03:02:55,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:55,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491334770] [2024-06-28 03:02:55,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:55,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:56,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:56,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491334770] [2024-06-28 03:02:56,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491334770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:56,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:56,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:02:56,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403197087] [2024-06-28 03:02:56,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:56,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:02:56,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:02:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:02:56,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:56,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 850 transitions, 15645 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:56,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:56,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:56,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:58,721 INFO L124 PetriNetUnfolderBase]: 5942/9175 cut-off events. [2024-06-28 03:02:58,721 INFO L125 PetriNetUnfolderBase]: For 1086394/1086416 co-relation queries the response was YES. [2024-06-28 03:02:58,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91954 conditions, 9175 events. 5942/9175 cut-off events. For 1086394/1086416 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 56220 event pairs, 1370 based on Foata normal form. 20/9179 useless extension candidates. Maximal degree in co-relation 91779. Up to 7750 conditions per place. [2024-06-28 03:02:58,870 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 667 selfloop transitions, 213 changer transitions 0/900 dead transitions. [2024-06-28 03:02:58,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 900 transitions, 17898 flow [2024-06-28 03:02:58,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:02:58,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:02:58,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 03:02:58,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728682170542636 [2024-06-28 03:02:58,871 INFO L175 Difference]: Start difference. First operand has 389 places, 850 transitions, 15645 flow. Second operand 9 states and 183 transitions. [2024-06-28 03:02:58,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 900 transitions, 17898 flow [2024-06-28 03:03:01,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 900 transitions, 17423 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:03:01,922 INFO L231 Difference]: Finished difference. Result has 390 places, 859 transitions, 15824 flow [2024-06-28 03:03:01,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15170, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=850, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15824, PETRI_PLACES=390, PETRI_TRANSITIONS=859} [2024-06-28 03:03:01,923 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 346 predicate places. [2024-06-28 03:03:01,923 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 859 transitions, 15824 flow [2024-06-28 03:03:01,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:01,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:01,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:01,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:03:01,924 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:01,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:01,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1801917873, now seen corresponding path program 21 times [2024-06-28 03:03:01,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:01,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476105206] [2024-06-28 03:03:01,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:01,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:03,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:03,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476105206] [2024-06-28 03:03:03,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476105206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:03,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:03,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:03,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037020436] [2024-06-28 03:03:03,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:03,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:03,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:03,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:03,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:03,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:03,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 859 transitions, 15824 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:03,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:03,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:03,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:05,820 INFO L124 PetriNetUnfolderBase]: 6057/9345 cut-off events. [2024-06-28 03:03:05,820 INFO L125 PetriNetUnfolderBase]: For 1138762/1138784 co-relation queries the response was YES. [2024-06-28 03:03:05,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94189 conditions, 9345 events. 6057/9345 cut-off events. For 1138762/1138784 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 57415 event pairs, 1389 based on Foata normal form. 24/9344 useless extension candidates. Maximal degree in co-relation 94013. Up to 8423 conditions per place. [2024-06-28 03:03:05,946 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 747 selfloop transitions, 134 changer transitions 0/901 dead transitions. [2024-06-28 03:03:05,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 901 transitions, 18046 flow [2024-06-28 03:03:05,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:05,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:05,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 03:03:05,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-28 03:03:05,947 INFO L175 Difference]: Start difference. First operand has 390 places, 859 transitions, 15824 flow. Second operand 9 states and 174 transitions. [2024-06-28 03:03:05,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 901 transitions, 18046 flow [2024-06-28 03:03:08,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 901 transitions, 17501 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:08,672 INFO L231 Difference]: Finished difference. Result has 392 places, 869 transitions, 15853 flow [2024-06-28 03:03:08,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15279, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=859, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=725, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15853, PETRI_PLACES=392, PETRI_TRANSITIONS=869} [2024-06-28 03:03:08,672 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 348 predicate places. [2024-06-28 03:03:08,672 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 869 transitions, 15853 flow [2024-06-28 03:03:08,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:08,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:08,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:08,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:03:08,673 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:08,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:08,673 INFO L85 PathProgramCache]: Analyzing trace with hash 2115466608, now seen corresponding path program 19 times [2024-06-28 03:03:08,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:08,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047040018] [2024-06-28 03:03:08,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:08,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:09,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:09,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047040018] [2024-06-28 03:03:09,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047040018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:09,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:09,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:09,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491842958] [2024-06-28 03:03:09,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:09,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:09,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:09,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:09,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:09,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:09,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 869 transitions, 15853 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:09,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:09,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:09,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:12,283 INFO L124 PetriNetUnfolderBase]: 6053/9354 cut-off events. [2024-06-28 03:03:12,283 INFO L125 PetriNetUnfolderBase]: For 1115400/1115422 co-relation queries the response was YES. [2024-06-28 03:03:12,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93301 conditions, 9354 events. 6053/9354 cut-off events. For 1115400/1115422 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 57686 event pairs, 1378 based on Foata normal form. 20/9358 useless extension candidates. Maximal degree in co-relation 93124. Up to 7917 conditions per place. [2024-06-28 03:03:12,426 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 678 selfloop transitions, 217 changer transitions 0/915 dead transitions. [2024-06-28 03:03:12,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 915 transitions, 18095 flow [2024-06-28 03:03:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:12,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:12,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 03:03:12,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46770025839793283 [2024-06-28 03:03:12,427 INFO L175 Difference]: Start difference. First operand has 392 places, 869 transitions, 15853 flow. Second operand 9 states and 181 transitions. [2024-06-28 03:03:12,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 915 transitions, 18095 flow [2024-06-28 03:03:15,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 915 transitions, 17721 flow, removed 75 selfloop flow, removed 6 redundant places. [2024-06-28 03:03:15,545 INFO L231 Difference]: Finished difference. Result has 395 places, 878 transitions, 16153 flow [2024-06-28 03:03:15,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15479, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=869, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16153, PETRI_PLACES=395, PETRI_TRANSITIONS=878} [2024-06-28 03:03:15,546 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 351 predicate places. [2024-06-28 03:03:15,546 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 878 transitions, 16153 flow [2024-06-28 03:03:15,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:15,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:15,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:15,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:03:15,546 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:15,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:15,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1801917718, now seen corresponding path program 20 times [2024-06-28 03:03:15,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:15,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250214094] [2024-06-28 03:03:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:15,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:16,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:16,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250214094] [2024-06-28 03:03:16,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250214094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:16,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:16,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:16,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044150774] [2024-06-28 03:03:16,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:16,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:16,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:16,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:16,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:16,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:16,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 878 transitions, 16153 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:16,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:16,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:16,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:19,206 INFO L124 PetriNetUnfolderBase]: 6103/9424 cut-off events. [2024-06-28 03:03:19,206 INFO L125 PetriNetUnfolderBase]: For 1117472/1117494 co-relation queries the response was YES. [2024-06-28 03:03:19,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94180 conditions, 9424 events. 6103/9424 cut-off events. For 1117472/1117494 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 58110 event pairs, 1364 based on Foata normal form. 20/9428 useless extension candidates. Maximal degree in co-relation 94002. Up to 7780 conditions per place. [2024-06-28 03:03:19,358 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 650 selfloop transitions, 264 changer transitions 0/934 dead transitions. [2024-06-28 03:03:19,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 934 transitions, 18801 flow [2024-06-28 03:03:19,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:03:19,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:03:19,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-28 03:03:19,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720930232558139 [2024-06-28 03:03:19,359 INFO L175 Difference]: Start difference. First operand has 395 places, 878 transitions, 16153 flow. Second operand 10 states and 203 transitions. [2024-06-28 03:03:19,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 934 transitions, 18801 flow [2024-06-28 03:03:22,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 934 transitions, 18226 flow, removed 79 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:22,683 INFO L231 Difference]: Finished difference. Result has 398 places, 887 transitions, 16369 flow [2024-06-28 03:03:22,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15588, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=878, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16369, PETRI_PLACES=398, PETRI_TRANSITIONS=887} [2024-06-28 03:03:22,683 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 354 predicate places. [2024-06-28 03:03:22,683 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 887 transitions, 16369 flow [2024-06-28 03:03:22,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:22,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:22,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:22,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:03:22,684 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:22,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:22,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1872735391, now seen corresponding path program 4 times [2024-06-28 03:03:22,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:22,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651301987] [2024-06-28 03:03:22,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:22,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:23,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:23,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651301987] [2024-06-28 03:03:23,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651301987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:23,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:23,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:23,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493114791] [2024-06-28 03:03:23,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:23,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:23,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:23,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:23,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:23,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:03:23,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 887 transitions, 16369 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:23,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:23,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:03:23,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:25,941 INFO L124 PetriNetUnfolderBase]: 6544/9989 cut-off events. [2024-06-28 03:03:25,941 INFO L125 PetriNetUnfolderBase]: For 1109770/1109783 co-relation queries the response was YES. [2024-06-28 03:03:26,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96904 conditions, 9989 events. 6544/9989 cut-off events. For 1109770/1109783 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 60161 event pairs, 1776 based on Foata normal form. 13/9990 useless extension candidates. Maximal degree in co-relation 96725. Up to 8963 conditions per place. [2024-06-28 03:03:26,124 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 687 selfloop transitions, 87 changer transitions 0/912 dead transitions. [2024-06-28 03:03:26,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 912 transitions, 18373 flow [2024-06-28 03:03:26,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 03:03:26,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45514950166112955 [2024-06-28 03:03:26,125 INFO L175 Difference]: Start difference. First operand has 398 places, 887 transitions, 16369 flow. Second operand 7 states and 137 transitions. [2024-06-28 03:03:26,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 912 transitions, 18373 flow [2024-06-28 03:03:29,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 912 transitions, 17795 flow, removed 82 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:29,113 INFO L231 Difference]: Finished difference. Result has 398 places, 891 transitions, 16055 flow [2024-06-28 03:03:29,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15795, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=804, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16055, PETRI_PLACES=398, PETRI_TRANSITIONS=891} [2024-06-28 03:03:29,114 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 354 predicate places. [2024-06-28 03:03:29,114 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 891 transitions, 16055 flow [2024-06-28 03:03:29,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:29,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:29,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:29,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:03:29,114 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:29,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:29,115 INFO L85 PathProgramCache]: Analyzing trace with hash -929657725, now seen corresponding path program 5 times [2024-06-28 03:03:29,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:29,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703522014] [2024-06-28 03:03:29,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:29,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:29,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:29,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:29,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703522014] [2024-06-28 03:03:29,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703522014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:29,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:29,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:29,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970270469] [2024-06-28 03:03:29,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:29,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:29,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:29,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:29,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:29,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:03:29,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 891 transitions, 16055 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:29,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:29,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:03:29,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:32,328 INFO L124 PetriNetUnfolderBase]: 6572/10030 cut-off events. [2024-06-28 03:03:32,328 INFO L125 PetriNetUnfolderBase]: For 1108212/1108230 co-relation queries the response was YES. [2024-06-28 03:03:32,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95860 conditions, 10030 events. 6572/10030 cut-off events. For 1108212/1108230 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 60491 event pairs, 1789 based on Foata normal form. 19/10037 useless extension candidates. Maximal degree in co-relation 95680. Up to 8991 conditions per place. [2024-06-28 03:03:32,500 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 694 selfloop transitions, 83 changer transitions 0/915 dead transitions. [2024-06-28 03:03:32,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 915 transitions, 18123 flow [2024-06-28 03:03:32,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:32,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-28 03:03:32,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43521594684385384 [2024-06-28 03:03:32,501 INFO L175 Difference]: Start difference. First operand has 398 places, 891 transitions, 16055 flow. Second operand 7 states and 131 transitions. [2024-06-28 03:03:32,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 915 transitions, 18123 flow [2024-06-28 03:03:35,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 915 transitions, 17997 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:35,608 INFO L231 Difference]: Finished difference. Result has 402 places, 899 transitions, 16312 flow [2024-06-28 03:03:35,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15943, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=891, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=814, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16312, PETRI_PLACES=402, PETRI_TRANSITIONS=899} [2024-06-28 03:03:35,608 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 358 predicate places. [2024-06-28 03:03:35,608 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 899 transitions, 16312 flow [2024-06-28 03:03:35,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:35,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:35,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:35,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:03:35,608 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:35,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:35,609 INFO L85 PathProgramCache]: Analyzing trace with hash 681658106, now seen corresponding path program 21 times [2024-06-28 03:03:35,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:35,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103789119] [2024-06-28 03:03:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:35,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:36,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:36,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103789119] [2024-06-28 03:03:36,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103789119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:36,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:36,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:36,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870781862] [2024-06-28 03:03:36,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:36,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:36,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:36,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:36,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:36,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:36,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 899 transitions, 16312 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:36,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:36,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:36,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:39,052 INFO L124 PetriNetUnfolderBase]: 6197/9555 cut-off events. [2024-06-28 03:03:39,053 INFO L125 PetriNetUnfolderBase]: For 1109249/1109265 co-relation queries the response was YES. [2024-06-28 03:03:39,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94340 conditions, 9555 events. 6197/9555 cut-off events. For 1109249/1109265 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 58987 event pairs, 1933 based on Foata normal form. 10/9518 useless extension candidates. Maximal degree in co-relation 94159. Up to 8776 conditions per place. [2024-06-28 03:03:39,206 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 839 selfloop transitions, 84 changer transitions 0/946 dead transitions. [2024-06-28 03:03:39,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 946 transitions, 18675 flow [2024-06-28 03:03:39,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:39,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:39,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 03:03:39,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470284237726098 [2024-06-28 03:03:39,207 INFO L175 Difference]: Start difference. First operand has 402 places, 899 transitions, 16312 flow. Second operand 9 states and 173 transitions. [2024-06-28 03:03:39,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 946 transitions, 18675 flow [2024-06-28 03:03:41,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 946 transitions, 18548 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:41,661 INFO L231 Difference]: Finished difference. Result has 407 places, 908 transitions, 16613 flow [2024-06-28 03:03:41,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=16185, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=815, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16613, PETRI_PLACES=407, PETRI_TRANSITIONS=908} [2024-06-28 03:03:41,661 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 363 predicate places. [2024-06-28 03:03:41,661 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 908 transitions, 16613 flow [2024-06-28 03:03:41,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:41,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:41,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:41,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:03:41,662 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:41,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:41,662 INFO L85 PathProgramCache]: Analyzing trace with hash 681652526, now seen corresponding path program 22 times [2024-06-28 03:03:41,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:41,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885300812] [2024-06-28 03:03:41,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:41,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:42,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:42,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885300812] [2024-06-28 03:03:42,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885300812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:42,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:42,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:42,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017632957] [2024-06-28 03:03:42,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:42,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:42,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:42,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:42,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:42,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:42,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 908 transitions, 16613 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:42,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:42,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:42,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:45,456 INFO L124 PetriNetUnfolderBase]: 6314/9742 cut-off events. [2024-06-28 03:03:45,456 INFO L125 PetriNetUnfolderBase]: For 1135787/1135803 co-relation queries the response was YES. [2024-06-28 03:03:45,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96798 conditions, 9742 events. 6314/9742 cut-off events. For 1135787/1135803 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 60432 event pairs, 1861 based on Foata normal form. 10/9703 useless extension candidates. Maximal degree in co-relation 96617. Up to 8763 conditions per place. [2024-06-28 03:03:45,620 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 831 selfloop transitions, 115 changer transitions 0/969 dead transitions. [2024-06-28 03:03:45,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 969 transitions, 19509 flow [2024-06-28 03:03:45,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:45,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:45,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 03:03:45,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4334038054968288 [2024-06-28 03:03:45,621 INFO L175 Difference]: Start difference. First operand has 407 places, 908 transitions, 16613 flow. Second operand 11 states and 205 transitions. [2024-06-28 03:03:45,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 969 transitions, 19509 flow [2024-06-28 03:03:48,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 969 transitions, 19186 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:48,385 INFO L231 Difference]: Finished difference. Result has 411 places, 923 transitions, 16959 flow [2024-06-28 03:03:48,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=16290, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=908, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=802, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16959, PETRI_PLACES=411, PETRI_TRANSITIONS=923} [2024-06-28 03:03:48,385 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 367 predicate places. [2024-06-28 03:03:48,386 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 923 transitions, 16959 flow [2024-06-28 03:03:48,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:48,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:48,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:48,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:03:48,386 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:48,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:48,387 INFO L85 PathProgramCache]: Analyzing trace with hash 938637132, now seen corresponding path program 1 times [2024-06-28 03:03:48,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:48,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058757640] [2024-06-28 03:03:48,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:48,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:49,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:49,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:49,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058757640] [2024-06-28 03:03:49,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058757640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:49,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:49,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:03:49,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078529156] [2024-06-28 03:03:49,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:49,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:03:49,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:49,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:03:49,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:03:49,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:03:49,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 923 transitions, 16959 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:49,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:49,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:03:49,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:52,347 INFO L124 PetriNetUnfolderBase]: 7037/10596 cut-off events. [2024-06-28 03:03:52,347 INFO L125 PetriNetUnfolderBase]: For 1160991/1161002 co-relation queries the response was YES. [2024-06-28 03:03:52,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102443 conditions, 10596 events. 7037/10596 cut-off events. For 1160991/1161002 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 62970 event pairs, 2322 based on Foata normal form. 3/10560 useless extension candidates. Maximal degree in co-relation 102261. Up to 10194 conditions per place. [2024-06-28 03:03:52,494 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 907 selfloop transitions, 32 changer transitions 0/960 dead transitions. [2024-06-28 03:03:52,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 960 transitions, 19153 flow [2024-06-28 03:03:52,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:52,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:52,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:03:52,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108527131782946 [2024-06-28 03:03:52,495 INFO L175 Difference]: Start difference. First operand has 411 places, 923 transitions, 16959 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:03:52,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 960 transitions, 19153 flow [2024-06-28 03:03:55,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 960 transitions, 18829 flow, removed 112 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:55,290 INFO L231 Difference]: Finished difference. Result has 413 places, 930 transitions, 16856 flow [2024-06-28 03:03:55,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=16644, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=923, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=891, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16856, PETRI_PLACES=413, PETRI_TRANSITIONS=930} [2024-06-28 03:03:55,291 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 369 predicate places. [2024-06-28 03:03:55,291 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 930 transitions, 16856 flow [2024-06-28 03:03:55,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:55,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:55,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:55,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:03:55,291 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:55,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:55,291 INFO L85 PathProgramCache]: Analyzing trace with hash -897539954, now seen corresponding path program 23 times [2024-06-28 03:03:55,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:55,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745892790] [2024-06-28 03:03:55,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:55,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:56,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:56,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:56,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745892790] [2024-06-28 03:03:56,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745892790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:56,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:56,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:56,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211674029] [2024-06-28 03:03:56,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:56,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:56,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:56,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:56,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:56,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:56,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 930 transitions, 16856 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:56,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:56,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:56,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:59,271 INFO L124 PetriNetUnfolderBase]: 6388/9835 cut-off events. [2024-06-28 03:03:59,271 INFO L125 PetriNetUnfolderBase]: For 1177769/1177785 co-relation queries the response was YES. [2024-06-28 03:03:59,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97043 conditions, 9835 events. 6388/9835 cut-off events. For 1177769/1177785 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 61059 event pairs, 1937 based on Foata normal form. 17/9803 useless extension candidates. Maximal degree in co-relation 96859. Up to 9048 conditions per place. [2024-06-28 03:03:59,439 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 883 selfloop transitions, 69 changer transitions 0/975 dead transitions. [2024-06-28 03:03:59,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 975 transitions, 19500 flow [2024-06-28 03:03:59,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:59,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:59,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:03:59,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:03:59,440 INFO L175 Difference]: Start difference. First operand has 413 places, 930 transitions, 16856 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:03:59,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 975 transitions, 19500 flow [2024-06-28 03:04:02,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 975 transitions, 19129 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:02,672 INFO L231 Difference]: Finished difference. Result has 414 places, 939 transitions, 16897 flow [2024-06-28 03:04:02,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=16485, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=930, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=861, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16897, PETRI_PLACES=414, PETRI_TRANSITIONS=939} [2024-06-28 03:04:02,673 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 370 predicate places. [2024-06-28 03:04:02,673 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 939 transitions, 16897 flow [2024-06-28 03:04:02,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:02,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:02,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:02,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:04:02,674 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:02,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:02,674 INFO L85 PathProgramCache]: Analyzing trace with hash 681652371, now seen corresponding path program 22 times [2024-06-28 03:04:02,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:02,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579649982] [2024-06-28 03:04:02,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:02,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:03,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:03,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579649982] [2024-06-28 03:04:03,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579649982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:03,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:03,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:03,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123352243] [2024-06-28 03:04:03,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:03,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:03,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:03,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:03,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:03,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:03,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 939 transitions, 16897 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:03,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:03,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:03,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:06,364 INFO L124 PetriNetUnfolderBase]: 6360/9794 cut-off events. [2024-06-28 03:04:06,365 INFO L125 PetriNetUnfolderBase]: For 1161283/1161299 co-relation queries the response was YES. [2024-06-28 03:04:06,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96262 conditions, 9794 events. 6360/9794 cut-off events. For 1161283/1161299 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 60797 event pairs, 1942 based on Foata normal form. 14/9756 useless extension candidates. Maximal degree in co-relation 96077. Up to 9175 conditions per place. [2024-06-28 03:04:06,526 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 895 selfloop transitions, 48 changer transitions 0/966 dead transitions. [2024-06-28 03:04:06,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 966 transitions, 18935 flow [2024-06-28 03:04:06,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:04:06,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:04:06,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 03:04:06,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289405684754522 [2024-06-28 03:04:06,528 INFO L175 Difference]: Start difference. First operand has 414 places, 939 transitions, 16897 flow. Second operand 9 states and 166 transitions. [2024-06-28 03:04:06,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 966 transitions, 18935 flow [2024-06-28 03:04:09,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 966 transitions, 17828 flow, removed 194 selfloop flow, removed 10 redundant places. [2024-06-28 03:04:09,806 INFO L231 Difference]: Finished difference. Result has 413 places, 939 transitions, 15904 flow [2024-06-28 03:04:09,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15790, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=939, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=891, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15904, PETRI_PLACES=413, PETRI_TRANSITIONS=939} [2024-06-28 03:04:09,806 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 369 predicate places. [2024-06-28 03:04:09,806 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 939 transitions, 15904 flow [2024-06-28 03:04:09,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:09,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:09,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:09,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:04:09,807 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:09,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:09,807 INFO L85 PathProgramCache]: Analyzing trace with hash 681859916, now seen corresponding path program 24 times [2024-06-28 03:04:09,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:09,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928018630] [2024-06-28 03:04:09,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:09,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:10,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:10,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928018630] [2024-06-28 03:04:10,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928018630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:10,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:10,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:10,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681738445] [2024-06-28 03:04:10,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:10,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:10,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:10,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:10,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:10,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:10,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 939 transitions, 15904 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:10,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:10,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:10,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:13,347 INFO L124 PetriNetUnfolderBase]: 6338/9774 cut-off events. [2024-06-28 03:04:13,347 INFO L125 PetriNetUnfolderBase]: For 1143432/1143448 co-relation queries the response was YES. [2024-06-28 03:04:13,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93388 conditions, 9774 events. 6338/9774 cut-off events. For 1143432/1143448 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 60715 event pairs, 1902 based on Foata normal form. 10/9735 useless extension candidates. Maximal degree in co-relation 93203. Up to 8926 conditions per place. [2024-06-28 03:04:13,512 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 866 selfloop transitions, 87 changer transitions 0/976 dead transitions. [2024-06-28 03:04:13,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 976 transitions, 18079 flow [2024-06-28 03:04:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:04:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:04:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 03:04:13,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-28 03:04:13,513 INFO L175 Difference]: Start difference. First operand has 413 places, 939 transitions, 15904 flow. Second operand 9 states and 174 transitions. [2024-06-28 03:04:13,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 976 transitions, 18079 flow [2024-06-28 03:04:17,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 976 transitions, 17667 flow, removed 112 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:17,392 INFO L231 Difference]: Finished difference. Result has 414 places, 939 transitions, 15683 flow [2024-06-28 03:04:17,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15492, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=939, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=852, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15683, PETRI_PLACES=414, PETRI_TRANSITIONS=939} [2024-06-28 03:04:17,393 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 370 predicate places. [2024-06-28 03:04:17,393 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 939 transitions, 15683 flow [2024-06-28 03:04:17,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:17,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:17,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:17,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:04:17,394 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:17,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:17,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1459070461, now seen corresponding path program 6 times [2024-06-28 03:04:17,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:17,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290365089] [2024-06-28 03:04:17,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:17,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:18,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:18,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290365089] [2024-06-28 03:04:18,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290365089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:18,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:18,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:18,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627402552] [2024-06-28 03:04:18,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:18,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:18,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:18,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:18,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:18,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:04:18,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 939 transitions, 15683 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:18,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:18,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:04:18,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:20,960 INFO L124 PetriNetUnfolderBase]: 6779/10349 cut-off events. [2024-06-28 03:04:20,960 INFO L125 PetriNetUnfolderBase]: For 1100278/1100291 co-relation queries the response was YES. [2024-06-28 03:04:21,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94186 conditions, 10349 events. 6779/10349 cut-off events. For 1100278/1100291 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 62891 event pairs, 2370 based on Foata normal form. 14/10344 useless extension candidates. Maximal degree in co-relation 94000. Up to 9553 conditions per place. [2024-06-28 03:04:21,170 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 785 selfloop transitions, 26 changer transitions 0/949 dead transitions. [2024-06-28 03:04:21,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 949 transitions, 17497 flow [2024-06-28 03:04:21,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:21,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 03:04:21,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019933554817276 [2024-06-28 03:04:21,171 INFO L175 Difference]: Start difference. First operand has 414 places, 939 transitions, 15683 flow. Second operand 7 states and 121 transitions. [2024-06-28 03:04:21,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 949 transitions, 17497 flow [2024-06-28 03:04:24,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 949 transitions, 17261 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 03:04:24,673 INFO L231 Difference]: Finished difference. Result has 412 places, 939 transitions, 15513 flow [2024-06-28 03:04:24,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15453, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=939, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=913, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15513, PETRI_PLACES=412, PETRI_TRANSITIONS=939} [2024-06-28 03:04:24,673 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 368 predicate places. [2024-06-28 03:04:24,673 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 939 transitions, 15513 flow [2024-06-28 03:04:24,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:24,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:24,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:24,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:04:24,674 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:24,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:24,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1459070027, now seen corresponding path program 3 times [2024-06-28 03:04:24,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:24,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338367942] [2024-06-28 03:04:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:24,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:25,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:25,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338367942] [2024-06-28 03:04:25,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338367942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:25,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:25,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:25,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305097026] [2024-06-28 03:04:25,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:25,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:25,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:25,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:25,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:25,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:04:25,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 939 transitions, 15513 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:25,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:25,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:04:25,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:28,109 INFO L124 PetriNetUnfolderBase]: 6794/10369 cut-off events. [2024-06-28 03:04:28,109 INFO L125 PetriNetUnfolderBase]: For 1050656/1050666 co-relation queries the response was YES. [2024-06-28 03:04:28,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93208 conditions, 10369 events. 6794/10369 cut-off events. For 1050656/1050666 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 63000 event pairs, 2366 based on Foata normal form. 13/10364 useless extension candidates. Maximal degree in co-relation 93023. Up to 9582 conditions per place. [2024-06-28 03:04:28,296 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 796 selfloop transitions, 24 changer transitions 0/958 dead transitions. [2024-06-28 03:04:28,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 958 transitions, 17462 flow [2024-06-28 03:04:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:28,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:04:28,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053156146179402 [2024-06-28 03:04:28,297 INFO L175 Difference]: Start difference. First operand has 412 places, 939 transitions, 15513 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:04:28,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 958 transitions, 17462 flow [2024-06-28 03:04:31,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 958 transitions, 17265 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 03:04:31,852 INFO L231 Difference]: Finished difference. Result has 412 places, 944 transitions, 15473 flow [2024-06-28 03:04:31,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15316, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=939, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=920, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15473, PETRI_PLACES=412, PETRI_TRANSITIONS=944} [2024-06-28 03:04:31,853 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 368 predicate places. [2024-06-28 03:04:31,853 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 944 transitions, 15473 flow [2024-06-28 03:04:31,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:31,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:31,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:31,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:04:31,853 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:31,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:31,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1458594797, now seen corresponding path program 4 times [2024-06-28 03:04:31,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:31,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588650691] [2024-06-28 03:04:31,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:31,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:32,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:32,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588650691] [2024-06-28 03:04:32,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588650691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:32,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:32,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:32,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504745974] [2024-06-28 03:04:32,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:32,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:32,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:32,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:32,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:32,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:04:32,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 944 transitions, 15473 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:32,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:32,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:04:32,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:35,204 INFO L124 PetriNetUnfolderBase]: 6785/10357 cut-off events. [2024-06-28 03:04:35,205 INFO L125 PetriNetUnfolderBase]: For 1063197/1063207 co-relation queries the response was YES. [2024-06-28 03:04:35,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92984 conditions, 10357 events. 6785/10357 cut-off events. For 1063197/1063207 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 62888 event pairs, 2364 based on Foata normal form. 13/10352 useless extension candidates. Maximal degree in co-relation 92799. Up to 9587 conditions per place. [2024-06-28 03:04:35,396 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 800 selfloop transitions, 17 changer transitions 0/955 dead transitions. [2024-06-28 03:04:35,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 955 transitions, 17153 flow [2024-06-28 03:04:35,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:35,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:35,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 03:04:35,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38870431893687707 [2024-06-28 03:04:35,397 INFO L175 Difference]: Start difference. First operand has 412 places, 944 transitions, 15473 flow. Second operand 7 states and 117 transitions. [2024-06-28 03:04:35,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 955 transitions, 17153 flow [2024-06-28 03:04:39,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 955 transitions, 16995 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:39,044 INFO L231 Difference]: Finished difference. Result has 415 places, 944 transitions, 15357 flow [2024-06-28 03:04:39,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15315, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=927, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15357, PETRI_PLACES=415, PETRI_TRANSITIONS=944} [2024-06-28 03:04:39,045 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 371 predicate places. [2024-06-28 03:04:39,045 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 944 transitions, 15357 flow [2024-06-28 03:04:39,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:39,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:39,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:39,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:04:39,045 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:39,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:39,045 INFO L85 PathProgramCache]: Analyzing trace with hash 704811143, now seen corresponding path program 1 times [2024-06-28 03:04:39,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:39,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554983358] [2024-06-28 03:04:39,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:39,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:39,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:39,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554983358] [2024-06-28 03:04:39,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554983358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:39,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:39,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:39,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868333703] [2024-06-28 03:04:39,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:39,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:39,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:39,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:39,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:39,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 03:04:39,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 944 transitions, 15357 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:39,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:39,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 03:04:39,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:42,668 INFO L124 PetriNetUnfolderBase]: 7204/10781 cut-off events. [2024-06-28 03:04:42,668 INFO L125 PetriNetUnfolderBase]: For 1077348/1077348 co-relation queries the response was YES. [2024-06-28 03:04:42,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96733 conditions, 10781 events. 7204/10781 cut-off events. For 1077348/1077348 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 63303 event pairs, 2447 based on Foata normal form. 1/10780 useless extension candidates. Maximal degree in co-relation 96547. Up to 10596 conditions per place. [2024-06-28 03:04:42,855 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 938 selfloop transitions, 25 changer transitions 0/966 dead transitions. [2024-06-28 03:04:42,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 966 transitions, 17595 flow [2024-06-28 03:04:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:42,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 03:04:42,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953488372093023 [2024-06-28 03:04:42,856 INFO L175 Difference]: Start difference. First operand has 415 places, 944 transitions, 15357 flow. Second operand 7 states and 119 transitions. [2024-06-28 03:04:42,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 966 transitions, 17595 flow [2024-06-28 03:04:45,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 966 transitions, 17511 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:04:45,791 INFO L231 Difference]: Finished difference. Result has 415 places, 950 transitions, 15411 flow [2024-06-28 03:04:45,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15273, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=922, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15411, PETRI_PLACES=415, PETRI_TRANSITIONS=950} [2024-06-28 03:04:45,792 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 371 predicate places. [2024-06-28 03:04:45,792 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 950 transitions, 15411 flow [2024-06-28 03:04:45,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:45,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:45,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:45,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:04:45,793 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:45,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1695060875, now seen corresponding path program 1 times [2024-06-28 03:04:45,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:45,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381553980] [2024-06-28 03:04:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:45,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:46,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:46,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381553980] [2024-06-28 03:04:46,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381553980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:46,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:46,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:46,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989751867] [2024-06-28 03:04:46,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:46,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:46,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:46,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:46,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:46,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:04:46,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 950 transitions, 15411 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:46,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:46,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:04:46,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:49,437 INFO L124 PetriNetUnfolderBase]: 6817/10397 cut-off events. [2024-06-28 03:04:49,437 INFO L125 PetriNetUnfolderBase]: For 1110535/1110545 co-relation queries the response was YES. [2024-06-28 03:04:49,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93745 conditions, 10397 events. 6817/10397 cut-off events. For 1110535/1110545 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 63049 event pairs, 2361 based on Foata normal form. 13/10392 useless extension candidates. Maximal degree in co-relation 93559. Up to 9572 conditions per place. [2024-06-28 03:04:49,639 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 805 selfloop transitions, 30 changer transitions 0/975 dead transitions. [2024-06-28 03:04:49,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 975 transitions, 17445 flow [2024-06-28 03:04:49,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:49,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 03:04:49,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:04:49,640 INFO L175 Difference]: Start difference. First operand has 415 places, 950 transitions, 15411 flow. Second operand 7 states and 129 transitions. [2024-06-28 03:04:49,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 975 transitions, 17445 flow [2024-06-28 03:04:53,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 975 transitions, 17384 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 03:04:53,070 INFO L231 Difference]: Finished difference. Result has 419 places, 958 transitions, 15559 flow [2024-06-28 03:04:53,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15350, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=950, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=925, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15559, PETRI_PLACES=419, PETRI_TRANSITIONS=958} [2024-06-28 03:04:53,071 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 375 predicate places. [2024-06-28 03:04:53,071 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 958 transitions, 15559 flow [2024-06-28 03:04:53,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:53,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:53,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:53,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:04:53,072 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:53,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:53,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1058116629, now seen corresponding path program 2 times [2024-06-28 03:04:53,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:53,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111564584] [2024-06-28 03:04:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:53,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:53,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:53,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111564584] [2024-06-28 03:04:53,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111564584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:53,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:53,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:53,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879192991] [2024-06-28 03:04:53,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:53,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:53,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:53,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:53,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:53,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 03:04:53,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 958 transitions, 15559 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:53,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:53,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 03:04:53,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:56,646 INFO L124 PetriNetUnfolderBase]: 7224/10809 cut-off events. [2024-06-28 03:04:56,646 INFO L125 PetriNetUnfolderBase]: For 1128138/1128138 co-relation queries the response was YES. [2024-06-28 03:04:56,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98063 conditions, 10809 events. 7224/10809 cut-off events. For 1128138/1128138 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 63529 event pairs, 2447 based on Foata normal form. 1/10808 useless extension candidates. Maximal degree in co-relation 97875. Up to 10623 conditions per place. [2024-06-28 03:04:56,834 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 944 selfloop transitions, 27 changer transitions 0/974 dead transitions. [2024-06-28 03:04:56,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 974 transitions, 17753 flow [2024-06-28 03:04:56,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:56,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 03:04:56,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38870431893687707 [2024-06-28 03:04:56,835 INFO L175 Difference]: Start difference. First operand has 419 places, 958 transitions, 15559 flow. Second operand 7 states and 117 transitions. [2024-06-28 03:04:56,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 974 transitions, 17753 flow [2024-06-28 03:04:59,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 974 transitions, 17670 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-28 03:04:59,911 INFO L231 Difference]: Finished difference. Result has 423 places, 961 transitions, 15570 flow [2024-06-28 03:04:59,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15476, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=958, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=934, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15570, PETRI_PLACES=423, PETRI_TRANSITIONS=961} [2024-06-28 03:04:59,911 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 379 predicate places. [2024-06-28 03:04:59,911 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 961 transitions, 15570 flow [2024-06-28 03:04:59,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:59,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:59,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:59,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:04:59,911 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:59,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:59,912 INFO L85 PathProgramCache]: Analyzing trace with hash -800194831, now seen corresponding path program 2 times [2024-06-28 03:04:59,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:59,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267257138] [2024-06-28 03:04:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:59,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:00,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:00,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267257138] [2024-06-28 03:05:00,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267257138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:00,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:00,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:00,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778229571] [2024-06-28 03:05:00,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:00,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:00,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:00,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:00,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:00,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:05:00,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 961 transitions, 15570 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:00,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:00,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:05:00,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:03,546 INFO L124 PetriNetUnfolderBase]: 6837/10426 cut-off events. [2024-06-28 03:05:03,547 INFO L125 PetriNetUnfolderBase]: For 1163943/1163956 co-relation queries the response was YES. [2024-06-28 03:05:03,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94959 conditions, 10426 events. 6837/10426 cut-off events. For 1163943/1163956 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 63218 event pairs, 2363 based on Foata normal form. 15/10422 useless extension candidates. Maximal degree in co-relation 94769. Up to 9591 conditions per place. [2024-06-28 03:05:03,762 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 802 selfloop transitions, 36 changer transitions 0/979 dead transitions. [2024-06-28 03:05:03,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 979 transitions, 17550 flow [2024-06-28 03:05:03,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:05:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:05:03,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 03:05:03,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40863787375415284 [2024-06-28 03:05:03,764 INFO L175 Difference]: Start difference. First operand has 423 places, 961 transitions, 15570 flow. Second operand 7 states and 123 transitions. [2024-06-28 03:05:03,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 979 transitions, 17550 flow [2024-06-28 03:05:06,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 979 transitions, 17490 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:05:06,767 INFO L231 Difference]: Finished difference. Result has 426 places, 966 transitions, 15686 flow [2024-06-28 03:05:06,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15510, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=961, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=930, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15686, PETRI_PLACES=426, PETRI_TRANSITIONS=966} [2024-06-28 03:05:06,767 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 382 predicate places. [2024-06-28 03:05:06,767 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 966 transitions, 15686 flow [2024-06-28 03:05:06,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:06,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:06,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:06,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:05:06,770 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:06,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:06,770 INFO L85 PathProgramCache]: Analyzing trace with hash 711477383, now seen corresponding path program 3 times [2024-06-28 03:05:06,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:06,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147383301] [2024-06-28 03:05:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:06,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:07,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:07,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147383301] [2024-06-28 03:05:07,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147383301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:07,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:07,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:07,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820275635] [2024-06-28 03:05:07,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:07,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:07,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:07,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:07,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:07,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 03:05:07,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 966 transitions, 15686 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:07,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:07,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 03:05:07,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:10,409 INFO L124 PetriNetUnfolderBase]: 7236/10827 cut-off events. [2024-06-28 03:05:10,409 INFO L125 PetriNetUnfolderBase]: For 1176769/1176772 co-relation queries the response was YES. [2024-06-28 03:05:10,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98779 conditions, 10827 events. 7236/10827 cut-off events. For 1176769/1176772 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 63640 event pairs, 2453 based on Foata normal form. 1/10825 useless extension candidates. Maximal degree in co-relation 98588. Up to 10641 conditions per place. [2024-06-28 03:05:10,587 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 945 selfloop transitions, 27 changer transitions 0/975 dead transitions. [2024-06-28 03:05:10,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 975 transitions, 17666 flow [2024-06-28 03:05:10,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:05:10,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:05:10,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 03:05:10,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3754152823920266 [2024-06-28 03:05:10,588 INFO L175 Difference]: Start difference. First operand has 426 places, 966 transitions, 15686 flow. Second operand 7 states and 113 transitions. [2024-06-28 03:05:10,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 975 transitions, 17666 flow [2024-06-28 03:05:13,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 975 transitions, 17519 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-28 03:05:13,699 INFO L231 Difference]: Finished difference. Result has 429 places, 966 transitions, 15599 flow [2024-06-28 03:05:13,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15539, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=966, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=939, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15599, PETRI_PLACES=429, PETRI_TRANSITIONS=966} [2024-06-28 03:05:13,700 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 385 predicate places. [2024-06-28 03:05:13,700 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 966 transitions, 15599 flow [2024-06-28 03:05:13,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:13,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:13,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:13,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:05:13,701 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:13,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:13,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1458885515, now seen corresponding path program 3 times [2024-06-28 03:05:13,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:13,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645601633] [2024-06-28 03:05:13,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:13,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:14,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:14,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:14,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645601633] [2024-06-28 03:05:14,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645601633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:14,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:14,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:14,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583112250] [2024-06-28 03:05:14,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:14,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:14,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:14,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:14,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:14,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:05:14,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 966 transitions, 15599 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:14,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:14,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:05:14,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:17,588 INFO L124 PetriNetUnfolderBase]: 6825/10410 cut-off events. [2024-06-28 03:05:17,589 INFO L125 PetriNetUnfolderBase]: For 1201521/1201534 co-relation queries the response was YES. [2024-06-28 03:05:17,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95026 conditions, 10410 events. 6825/10410 cut-off events. For 1201521/1201534 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 63231 event pairs, 2361 based on Foata normal form. 15/10406 useless extension candidates. Maximal degree in co-relation 94834. Up to 9581 conditions per place. [2024-06-28 03:05:17,781 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 804 selfloop transitions, 35 changer transitions 0/980 dead transitions. [2024-06-28 03:05:17,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 980 transitions, 17333 flow [2024-06-28 03:05:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:05:17,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:05:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 03:05:17,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152823920265781 [2024-06-28 03:05:17,782 INFO L175 Difference]: Start difference. First operand has 429 places, 966 transitions, 15599 flow. Second operand 7 states and 125 transitions. [2024-06-28 03:05:17,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 980 transitions, 17333 flow [2024-06-28 03:05:21,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 980 transitions, 17213 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 03:05:21,385 INFO L231 Difference]: Finished difference. Result has 429 places, 966 transitions, 15557 flow [2024-06-28 03:05:21,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15479, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=966, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=931, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15557, PETRI_PLACES=429, PETRI_TRANSITIONS=966} [2024-06-28 03:05:21,386 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 385 predicate places. [2024-06-28 03:05:21,386 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 966 transitions, 15557 flow [2024-06-28 03:05:21,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:21,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:21,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:21,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:05:21,387 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:21,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:21,387 INFO L85 PathProgramCache]: Analyzing trace with hash 766717922, now seen corresponding path program 1 times [2024-06-28 03:05:21,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:21,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212149071] [2024-06-28 03:05:21,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:21,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:22,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:22,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212149071] [2024-06-28 03:05:22,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212149071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:22,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:22,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:22,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817148579] [2024-06-28 03:05:22,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:22,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:22,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:22,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:22,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:22,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:22,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 966 transitions, 15557 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:22,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:22,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:22,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:25,400 INFO L124 PetriNetUnfolderBase]: 6501/10018 cut-off events. [2024-06-28 03:05:25,400 INFO L125 PetriNetUnfolderBase]: For 1329071/1329114 co-relation queries the response was YES. [2024-06-28 03:05:25,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96309 conditions, 10018 events. 6501/10018 cut-off events. For 1329071/1329114 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 62374 event pairs, 734 based on Foata normal form. 36/10015 useless extension candidates. Maximal degree in co-relation 96116. Up to 5637 conditions per place. [2024-06-28 03:05:25,601 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 689 selfloop transitions, 452 changer transitions 0/1167 dead transitions. [2024-06-28 03:05:25,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 1167 transitions, 20227 flow [2024-06-28 03:05:25,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2024-06-28 03:05:25,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48414376321353064 [2024-06-28 03:05:25,602 INFO L175 Difference]: Start difference. First operand has 429 places, 966 transitions, 15557 flow. Second operand 11 states and 229 transitions. [2024-06-28 03:05:25,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 1167 transitions, 20227 flow [2024-06-28 03:05:28,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 1167 transitions, 20126 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:05:28,455 INFO L231 Difference]: Finished difference. Result has 436 places, 1102 transitions, 18693 flow [2024-06-28 03:05:28,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15456, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=966, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18693, PETRI_PLACES=436, PETRI_TRANSITIONS=1102} [2024-06-28 03:05:28,456 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 392 predicate places. [2024-06-28 03:05:28,456 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 1102 transitions, 18693 flow [2024-06-28 03:05:28,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:28,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:28,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:28,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:05:28,456 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:28,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:28,456 INFO L85 PathProgramCache]: Analyzing trace with hash 575312242, now seen corresponding path program 2 times [2024-06-28 03:05:28,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:28,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331011885] [2024-06-28 03:05:28,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:28,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:29,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:29,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331011885] [2024-06-28 03:05:29,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331011885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:29,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:29,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:29,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845202116] [2024-06-28 03:05:29,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:29,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:29,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:29,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:29,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:29,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:29,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 1102 transitions, 18693 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:29,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:29,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:29,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:32,681 INFO L124 PetriNetUnfolderBase]: 7169/11109 cut-off events. [2024-06-28 03:05:32,681 INFO L125 PetriNetUnfolderBase]: For 1489076/1489114 co-relation queries the response was YES. [2024-06-28 03:05:32,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109608 conditions, 11109 events. 7169/11109 cut-off events. For 1489076/1489114 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 71226 event pairs, 1275 based on Foata normal form. 44/11120 useless extension candidates. Maximal degree in co-relation 109411. Up to 7640 conditions per place. [2024-06-28 03:05:32,890 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 773 selfloop transitions, 509 changer transitions 0/1308 dead transitions. [2024-06-28 03:05:32,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 1308 transitions, 23659 flow [2024-06-28 03:05:32,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:32,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:32,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 231 transitions. [2024-06-28 03:05:32,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 03:05:32,891 INFO L175 Difference]: Start difference. First operand has 436 places, 1102 transitions, 18693 flow. Second operand 11 states and 231 transitions. [2024-06-28 03:05:32,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 1308 transitions, 23659 flow [2024-06-28 03:05:36,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 1308 transitions, 23455 flow, removed 85 selfloop flow, removed 4 redundant places. [2024-06-28 03:05:36,710 INFO L231 Difference]: Finished difference. Result has 445 places, 1231 transitions, 21567 flow [2024-06-28 03:05:36,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=18595, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=383, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21567, PETRI_PLACES=445, PETRI_TRANSITIONS=1231} [2024-06-28 03:05:36,710 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 401 predicate places. [2024-06-28 03:05:36,710 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 1231 transitions, 21567 flow [2024-06-28 03:05:36,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:36,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:36,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:36,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:05:36,711 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:36,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:36,711 INFO L85 PathProgramCache]: Analyzing trace with hash -698129516, now seen corresponding path program 3 times [2024-06-28 03:05:36,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:36,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982225518] [2024-06-28 03:05:36,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:36,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:37,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:37,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982225518] [2024-06-28 03:05:37,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982225518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:37,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:37,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:37,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771140335] [2024-06-28 03:05:37,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:37,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:37,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:37,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:37,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:37,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:37,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 1231 transitions, 21567 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:37,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:37,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:37,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:42,079 INFO L124 PetriNetUnfolderBase]: 7292/11327 cut-off events. [2024-06-28 03:05:42,079 INFO L125 PetriNetUnfolderBase]: For 1536081/1536119 co-relation queries the response was YES. [2024-06-28 03:05:42,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113428 conditions, 11327 events. 7292/11327 cut-off events. For 1536081/1536119 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 73074 event pairs, 1469 based on Foata normal form. 48/11342 useless extension candidates. Maximal degree in co-relation 113227. Up to 8932 conditions per place. [2024-06-28 03:05:42,254 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 795 selfloop transitions, 491 changer transitions 0/1312 dead transitions. [2024-06-28 03:05:42,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 1312 transitions, 25171 flow [2024-06-28 03:05:42,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:42,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:42,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2024-06-28 03:05:42,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48414376321353064 [2024-06-28 03:05:42,255 INFO L175 Difference]: Start difference. First operand has 445 places, 1231 transitions, 21567 flow. Second operand 11 states and 229 transitions. [2024-06-28 03:05:42,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 1312 transitions, 25171 flow [2024-06-28 03:05:46,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 1312 transitions, 24919 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 03:05:46,147 INFO L231 Difference]: Finished difference. Result has 452 places, 1248 transitions, 22779 flow [2024-06-28 03:05:46,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=21335, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=474, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=753, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=22779, PETRI_PLACES=452, PETRI_TRANSITIONS=1248} [2024-06-28 03:05:46,148 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 408 predicate places. [2024-06-28 03:05:46,148 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 1248 transitions, 22779 flow [2024-06-28 03:05:46,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:46,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:46,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:46,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:05:46,149 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:46,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:46,149 INFO L85 PathProgramCache]: Analyzing trace with hash 633520012, now seen corresponding path program 4 times [2024-06-28 03:05:46,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:46,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936222585] [2024-06-28 03:05:46,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:46,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:47,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:47,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936222585] [2024-06-28 03:05:47,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936222585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:47,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:47,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:47,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150288454] [2024-06-28 03:05:47,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:47,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:47,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:47,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:47,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:47,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:47,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 1248 transitions, 22779 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:47,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:47,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:47,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:51,447 INFO L124 PetriNetUnfolderBase]: 7388/11503 cut-off events. [2024-06-28 03:05:51,447 INFO L125 PetriNetUnfolderBase]: For 1564789/1564827 co-relation queries the response was YES. [2024-06-28 03:05:51,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116808 conditions, 11503 events. 7388/11503 cut-off events. For 1564789/1564827 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 74637 event pairs, 1481 based on Foata normal form. 44/11514 useless extension candidates. Maximal degree in co-relation 116604. Up to 8963 conditions per place. [2024-06-28 03:05:51,670 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 818 selfloop transitions, 476 changer transitions 0/1320 dead transitions. [2024-06-28 03:05:51,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1320 transitions, 25987 flow [2024-06-28 03:05:51,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:51,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:51,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 228 transitions. [2024-06-28 03:05:51,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4820295983086681 [2024-06-28 03:05:51,671 INFO L175 Difference]: Start difference. First operand has 452 places, 1248 transitions, 22779 flow. Second operand 11 states and 228 transitions. [2024-06-28 03:05:51,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1320 transitions, 25987 flow [2024-06-28 03:05:55,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 1320 transitions, 25497 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 03:05:55,048 INFO L231 Difference]: Finished difference. Result has 459 places, 1251 transitions, 23344 flow [2024-06-28 03:05:55,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=22289, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=473, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=772, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23344, PETRI_PLACES=459, PETRI_TRANSITIONS=1251} [2024-06-28 03:05:55,049 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 415 predicate places. [2024-06-28 03:05:55,049 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 1251 transitions, 23344 flow [2024-06-28 03:05:55,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:55,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:55,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:55,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:05:55,049 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:55,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:55,049 INFO L85 PathProgramCache]: Analyzing trace with hash 633404692, now seen corresponding path program 5 times [2024-06-28 03:05:55,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:55,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426057347] [2024-06-28 03:05:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:55,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:55,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:55,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:55,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426057347] [2024-06-28 03:05:55,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426057347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:55,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:55,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:55,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788567764] [2024-06-28 03:05:55,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:55,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:55,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:55,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:55,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:56,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:56,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 1251 transitions, 23344 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:56,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:56,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:56,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:00,422 INFO L124 PetriNetUnfolderBase]: 7398/11525 cut-off events. [2024-06-28 03:06:00,423 INFO L125 PetriNetUnfolderBase]: For 1560256/1560294 co-relation queries the response was YES. [2024-06-28 03:06:00,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116300 conditions, 11525 events. 7398/11525 cut-off events. For 1560256/1560294 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 74846 event pairs, 1448 based on Foata normal form. 44/11536 useless extension candidates. Maximal degree in co-relation 116095. Up to 8747 conditions per place. [2024-06-28 03:06:00,608 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 812 selfloop transitions, 486 changer transitions 0/1324 dead transitions. [2024-06-28 03:06:00,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 1324 transitions, 26542 flow [2024-06-28 03:06:00,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:06:00,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:06:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2024-06-28 03:06:00,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48625792811839325 [2024-06-28 03:06:00,609 INFO L175 Difference]: Start difference. First operand has 459 places, 1251 transitions, 23344 flow. Second operand 11 states and 230 transitions. [2024-06-28 03:06:00,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 1324 transitions, 26542 flow [2024-06-28 03:06:04,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 1324 transitions, 25523 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 03:06:04,040 INFO L231 Difference]: Finished difference. Result has 461 places, 1253 transitions, 23374 flow [2024-06-28 03:06:04,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=22325, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=765, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23374, PETRI_PLACES=461, PETRI_TRANSITIONS=1253} [2024-06-28 03:06:04,041 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 417 predicate places. [2024-06-28 03:06:04,041 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 1253 transitions, 23374 flow [2024-06-28 03:06:04,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:04,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:04,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:04,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:06:04,041 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:04,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:04,041 INFO L85 PathProgramCache]: Analyzing trace with hash -352612598, now seen corresponding path program 1 times [2024-06-28 03:06:04,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:04,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118835034] [2024-06-28 03:06:04,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:04,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:04,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:04,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118835034] [2024-06-28 03:06:04,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118835034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:04,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:04,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:04,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974120396] [2024-06-28 03:06:04,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:04,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:04,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:04,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:04,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:04,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:06:04,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 1253 transitions, 23374 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:04,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:04,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:06:04,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:09,246 INFO L124 PetriNetUnfolderBase]: 8120/12484 cut-off events. [2024-06-28 03:06:09,246 INFO L125 PetriNetUnfolderBase]: For 1546933/1546953 co-relation queries the response was YES. [2024-06-28 03:06:09,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122709 conditions, 12484 events. 8120/12484 cut-off events. For 1546933/1546953 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 79453 event pairs, 2258 based on Foata normal form. 20/12464 useless extension candidates. Maximal degree in co-relation 122503. Up to 11251 conditions per place. [2024-06-28 03:06:09,636 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 1032 selfloop transitions, 122 changer transitions 0/1295 dead transitions. [2024-06-28 03:06:09,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 1295 transitions, 26381 flow [2024-06-28 03:06:09,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:06:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:06:09,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 03:06:09,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2024-06-28 03:06:09,638 INFO L175 Difference]: Start difference. First operand has 461 places, 1253 transitions, 23374 flow. Second operand 9 states and 176 transitions. [2024-06-28 03:06:09,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 1295 transitions, 26381 flow [2024-06-28 03:06:13,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 1295 transitions, 25347 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 03:06:13,249 INFO L231 Difference]: Finished difference. Result has 462 places, 1264 transitions, 22833 flow [2024-06-28 03:06:13,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=22344, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22833, PETRI_PLACES=462, PETRI_TRANSITIONS=1264} [2024-06-28 03:06:13,250 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 418 predicate places. [2024-06-28 03:06:13,250 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1264 transitions, 22833 flow [2024-06-28 03:06:13,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:13,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:13,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:13,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:06:13,250 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:13,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:13,250 INFO L85 PathProgramCache]: Analyzing trace with hash 14735658, now seen corresponding path program 6 times [2024-06-28 03:06:13,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:13,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178652223] [2024-06-28 03:06:13,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:13,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:14,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:14,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178652223] [2024-06-28 03:06:14,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178652223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:14,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:14,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:06:14,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871974211] [2024-06-28 03:06:14,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:14,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:06:14,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:14,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:06:14,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:06:14,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:06:14,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1264 transitions, 22833 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:14,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:14,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:06:14,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:18,909 INFO L124 PetriNetUnfolderBase]: 7991/12539 cut-off events. [2024-06-28 03:06:18,910 INFO L125 PetriNetUnfolderBase]: For 1744852/1744893 co-relation queries the response was YES. [2024-06-28 03:06:19,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123623 conditions, 12539 events. 7991/12539 cut-off events. For 1744852/1744893 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 83475 event pairs, 1723 based on Foata normal form. 48/12528 useless extension candidates. Maximal degree in co-relation 123415. Up to 7255 conditions per place. [2024-06-28 03:06:19,118 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 534 selfloop transitions, 788 changer transitions 0/1350 dead transitions. [2024-06-28 03:06:19,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 1350 transitions, 27045 flow [2024-06-28 03:06:19,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:06:19,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:06:19,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 239 transitions. [2024-06-28 03:06:19,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052854122621564 [2024-06-28 03:06:19,120 INFO L175 Difference]: Start difference. First operand has 462 places, 1264 transitions, 22833 flow. Second operand 11 states and 239 transitions. [2024-06-28 03:06:19,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 1350 transitions, 27045 flow [2024-06-28 03:06:23,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 1350 transitions, 26828 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 03:06:23,504 INFO L231 Difference]: Finished difference. Result has 470 places, 1281 transitions, 24803 flow [2024-06-28 03:06:23,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=22616, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=774, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=24803, PETRI_PLACES=470, PETRI_TRANSITIONS=1281} [2024-06-28 03:06:23,504 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 426 predicate places. [2024-06-28 03:06:23,504 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 1281 transitions, 24803 flow [2024-06-28 03:06:23,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:23,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:23,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:23,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:06:23,505 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:23,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:23,505 INFO L85 PathProgramCache]: Analyzing trace with hash 72948078, now seen corresponding path program 7 times [2024-06-28 03:06:23,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:23,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219596095] [2024-06-28 03:06:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:23,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:24,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:24,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:24,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219596095] [2024-06-28 03:06:24,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219596095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:24,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:24,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:06:24,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546941402] [2024-06-28 03:06:24,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:24,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:06:24,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:24,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:06:24,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:06:24,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:06:24,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 1281 transitions, 24803 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:24,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:24,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:06:24,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:29,721 INFO L124 PetriNetUnfolderBase]: 8137/12801 cut-off events. [2024-06-28 03:06:29,721 INFO L125 PetriNetUnfolderBase]: For 1854608/1854649 co-relation queries the response was YES. [2024-06-28 03:06:29,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128793 conditions, 12801 events. 8137/12801 cut-off events. For 1854608/1854649 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 85846 event pairs, 1948 based on Foata normal form. 62/12805 useless extension candidates. Maximal degree in co-relation 128582. Up to 9412 conditions per place. [2024-06-28 03:06:29,948 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 602 selfloop transitions, 715 changer transitions 0/1345 dead transitions. [2024-06-28 03:06:29,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 1345 transitions, 28500 flow [2024-06-28 03:06:29,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:06:29,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:06:29,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2024-06-28 03:06:29,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904862579281184 [2024-06-28 03:06:29,949 INFO L175 Difference]: Start difference. First operand has 470 places, 1281 transitions, 24803 flow. Second operand 11 states and 232 transitions. [2024-06-28 03:06:29,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 1345 transitions, 28500 flow [2024-06-28 03:06:34,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 1345 transitions, 27563 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 03:06:34,818 INFO L231 Difference]: Finished difference. Result has 473 places, 1286 transitions, 25495 flow [2024-06-28 03:06:34,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=23872, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=710, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=25495, PETRI_PLACES=473, PETRI_TRANSITIONS=1286} [2024-06-28 03:06:34,819 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 429 predicate places. [2024-06-28 03:06:34,819 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 1286 transitions, 25495 flow [2024-06-28 03:06:34,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:34,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:34,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:34,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:06:34,819 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:34,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:34,819 INFO L85 PathProgramCache]: Analyzing trace with hash 72943428, now seen corresponding path program 8 times [2024-06-28 03:06:34,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:34,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938942744] [2024-06-28 03:06:34,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:34,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat